That is not to say that it is insignificant; once the zero of potential is set, then every value of potential is measured with respect to that zero.   (Faraday's law of induction). The potential energy and hence also the electric potential is only defined up to an additive constant: one must arbitrarily choose a position where the potential energy and the electric potential are zero. In some other (less common) systems of units, such as CGS-Gaussian, many of these equations would be altered. All Rights Reserved. {\displaystyle \textstyle \int _{C}\mathbf {E} \cdot \mathrm {d} {\boldsymbol {\ell }}} Now when this unit charge is moved from A to B or a distance of dX then the work done is: The negative sign of dx is taken because the charge in distance or dx is in opposite direction of X. Copyright(C) 2020 Infrastructure Development Institute-Japan. Typically, the reference point is the Earth or a point at infinity, although any point can be used. In the previous section of Lesson 1, it was reasoned that the movement of a positive test charge within an electric field is accompanied by changes in potential energy. The importance of equipotential surface is that because of no difference in potential between points, there is no current flow or attraction and repulsion between the points in the equipotential surface. In the electrical case, a charge will exert a force on any other charge and potential energy arises from any collection of charges. Potential energy can be defined as the capacity for doing work which arises from position or configuration. For example, if a positive charge Q is fixed at some point in space, any other positive charge which is brought close to it will experience a repulsive force and will therefore have potential energy. The terms "voltage" and "electric potential" are a bit ambiguous in that, in practice, they can refer to either of these in different contexts.   is path-dependent because A read electric potential Vgr is given to a control gate electrode of the memory cell M1. The SI derived unit of electric potential is the volt (in honor of Alessandro Volta), which is why a difference in electric potential between two points is known as voltage. Let a positive charge of Q coulombs be placed in a medium at position “C” , And let another charge of unit positive charge be place at position “A” , and let the distance between A and C be X. The electric potential difference between two locations is one volt if it takes one joule of work to move one coulomb of charge from one location to the other. E One example of equipotential surface is a spherical surface surrounding a charge. Electric potential energy. The nature of potential is that the zero point is arbitrary; it can be set like the origin of a coordinate system. The electric potential arising from a point charge Q, at a distance r from the charge is observed to be. Given this, the quantity, is a conservative field by Faraday's law and one can therefore write. In particular, A is defined to satisfy: where B is the magnetic field. {\displaystyle \mathbf {\nabla } \times \mathbf {E} \neq \mathbf {0} } The potential energy of a test charge q in the vicinity of this source charge will be: In electricity, it is usually more convenient to use the electric potential energy per unit charge, just called electric potential or voltage. Copyright © Japan Patent office. For practical electrical circuits, the earth or ground potential is usually taken to be zero and everything is referenced to the earth. Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used. An electric potential (also called the electric field potential, potential drop, or the electrostatic potential) is the amount of work needed to move a unit of electric charge from a reference point to a specific point in an electric field without producing an acceleration. Electrical potential is analogous to mechanical potential in classical mechanics. A gravitational analogy was relied upon to explain the reasoning behind the relationship between location and potential energy. On the other hand, for time-varying fields. {\displaystyle V_{\mathbf {E} }}   is known as the Coulomb potential. where V is the scalar potential defined by the conservative field F. The electrostatic potential is simply the special case of this definition where A is time-invariant. The potential gradient is directed towards the opposite direction of electrical field. ◆ 【同】 electric potential ・A voltmeter is used for measuring the electric potential difference among two points. Electric potential energy. Copyright © 2020 Cross Language Inc. All Right Reserved. When a voltmeter is connected between two different types of metal, it measures not the electric potential difference, but instead the potential difference corrected for the different atomic environments. where ε0 is the permittivity of vacuum. The electrical force of repulsion and attraction between two charges goes up to infinity , so where ever a charge is placed it has some potential due to another charge.  That’s the reason the zero potential of a charge is supposed to be at infinity from another charge. d In the electrical case, a charge will exert a force on any other charge and potential energy arises from any collection of charges. Sort by: Top Voted. denotes the divergence. ≠ All Rights Reserved. Electric field lines leave the positive charge and enter the negative charge. The Unit of potential difference is voltage and is denoted by V. One voltage is defined as, the potential of a unit positive charge, when the charge is moved from infinity to a certain point inside an electric field with one joule of force. V ∇ The general expression for the electric potential as a result of a point charge Q can be obtained by referencing to a zero of potential at infinity. Electric potential is a way to explain a "difficult" vector field in terms of an "easy" scalar field. E {\displaystyle \phi } Because the divergence of the magnetic field is always zero due to the absence of magnetic monopoles, such an A can always be found. The generalization of electric potential to this case is described below. If we move a object from it’s height from 5 meter above earth to 10 meters above earth some work is done to raise the height of the object and the object gains some mechanical potential energy , similarly if we place two positive charges  Q1 and Q2 as shown in the following figure: If originally Q1 be at position A and Q2 be at position C, and latter we move the Q2 from C to B then some work is done to move the Q2 from C to B and the force of electrical repulsion between Q1 and Q2 also increases; so the electrical potential of Q2 increases. All Rights Reserved. 「カテゴリ」「情報源」を複数指定しての検索が可能になりました。（プレミアム会員限定）, When the acquired electric potential of the calibration liquid exceeds a predetermined allowance, an error is reported.例文帳に追加, 取得した校正液の電位が予め定められた許容範囲を超えたとき、エラーを報知する。 - 特許庁, When the Vth after the writing is lower than the lower limit of the standard electric potential, the writing voltage is raised or the pulse length is increased.例文帳に追加, 書込み後のＶth＜基準電位下限の場合、書込み電圧を上げる、またはパルス長を広げる。 - 特許庁, E: the absolute value of the ζ electric potential of the coloring material particles is 30 to 200 mV.例文帳に追加, To reduce the influence of fluctuation of electric potential in power lines of a storage circuit in a pixel circuit.例文帳に追加, The variable voltage range of a reference electric potential is made to be changed during a same horizontal synchronization period.例文帳に追加, To provide an electric potential measuring device which is relatively high in sensitivity and a production method thereof.例文帳に追加, A read electric potential Vgr is given to a control gate electrode of the memory cell M1.例文帳に追加, メモリセルＭ１のコントロールゲート電極には、読み出し電位Ｖｇｒを与える。 - 特許庁, To provide an electric potential measuring device having a constitution effective to be miniaturized and to have high sensitivity and high reliability.例文帳に追加, 小型化、高感度化、高信頼性化するのに有効な構成を有する電位測定装置である。 - 特許庁, To provide a discharge tube, capable of stably and repeatedly generating the discharge of a prescribed electric potential.例文帳に追加, 所定電位の放電を安定させて繰り返し発生させることのできる放電管を得る。 - 特許庁, The second low power-source electric potential VL2 is adjusted based on a temperature signal detected by a sensor.例文帳に追加, そして、第２低電源電位ＶＬ２は、センサで検出された温度信号に基づいて調整される。 - 特許庁, Furthermore, a discharge final electric potential of the positive electrode 1 is set to be not less than 1.5 V (vs. Li/Li^+).例文帳に追加, また、正極１の放電終止電位が、１．５Ｖ（ｖｓ．Ｌｉ／Ｌｉ^＋）以上に設定されている。 - 特許庁, The electric potential measuring apparatus comprises a first detecting means 3, second detecting means 3 and 4, and an arithmetic means.例文帳に追加, 電位測定装置は、第1検出手段3と、第2検出手段3、4と、演算手段とを有する。 - 特許庁, If the driver 31 has some defects, the detector 43 will not be able to detect the electric potential vs.例文帳に追加, もし、ドライバ３１に何等かの不良があると検知器４３は電位ｖs を検出することができない。 - 特許庁, Thus, electric potential in the subsequent primary electrification process is uniformized as shown in (f).例文帳に追加, このため（ｆ）に示すように、次の一次帯電工程における帯電電位が均一なものとなる。 - 特許庁, The core material 111 is composed of Al-Mn alloy that has higher electric potential than the brazing material layer 112.例文帳に追加, High electric potential is impressed on water in a washing tub electrically insulated from the earth.例文帳に追加, The electric potential of the signal terminal CN3 is subjected to negative feedback to a positive input terminal of the operational amplifier 17.例文帳に追加, 信号端子ＣＮ３の電位は、オペアンプ１７のプラス入力端子に負帰還されている。 - 特許庁, The electric potential of the substrate 3 is controlled through opening and closing of the switches SW1 to SW3.例文帳に追加, A cathode contact 103 to give the cathodic electric potential is connected to the surface of the wafer 101.例文帳に追加, ウェハ１０１表面には、陰極電位を与える陰極接点１０３が接続されている。 - 特許庁, Periodically, dark attenuation characteristics of the electric potential on the surface of a photoreceptor drum 20 are detected.例文帳に追加, To provide a lateral bipolar transistor on an SOI substrate where the effect of substrate electric potential is suppressed.例文帳に追加, 基板電位の影響を抑制したＳＯＩ基板上の横型バイポーラトランジスタを提供すること。 - 特許庁, The electric potential measuring device has the capacity changing means 102, a detecting means 105 and an impression signal generating means 106.例文帳に追加, 電位測定装置は、容量変化手段102と、検出手段105と、印加信号生成手段106とを有する。 - 特許庁, When this point of time is set to a charge finishing point, the time can be controlled by the negative electrode electric potential.例文帳に追加, More preferably, an electrode having an electric potential is arranged downstream of the beam diaphragm.例文帳に追加, The electric potential of the upper electrode as controlled by the voltage source is capable of influencing an electric potential of the plasma to be generated between the lower and upper electrodes.例文帳に追加, 上部電極の電位を電圧源を用いて制御することにより、下部電極と上部電極との間に生成するべきプラズマ電位に影響を与えることが可能である。 - 特許庁, Thus, the electric potential of the P-type layer 1 is fixed, and the electric potentials of a gate electrode 12 and a drain electrode 13, with the electric potential between both electrodes change evenly.例文帳に追加, これにより、Ｐ型層１の電位が固定されてゲート電極12とドレイン電極13の電位が固定され、両電極間の電位は一様に変化する。 - 特許庁, To provide a battery system capable of restraining Li metal from depositing on a negative electrode, by restraining negative electrode electric potential from becoming less than Li electric potential, when charging a lithium ion secondary battery; and to provide a hybrid automobile.例文帳に追加, リチウムイオン二次電池の充電時に、負極電位がＬｉ電位を下回るのを抑制して、負極にＬｉ金属が析出することを抑制することができる電池システム、及びハイブリッド自動車を提供する。 - 特許庁, The acceleration and deceleration electrode 22 is the electrode in which a negative electric potential is given to the ground electric potential, and which is installed on the upper stream side of the ion beam B against the ground electrode 21.例文帳に追加, 加速減速電極２２は、接地電位に対して負電位が与えられる電極であり、接地電極２１に対してイオンビームＢの上流側に設けられている。 - 特許庁, A level shift circuit 30 shifts the electric potential Vlp of the second terminal of the third resistor R3 and the electric potential Vhp of the second terminal of the fourth resistor R4 by a predetermined level.例文帳に追加, レベルシフト回路３０は、第３抵抗Ｒ３の第２端子の電位Ｖｌｐおよび第４抵抗Ｒ４の第２端子Ｖｈｐの電位を、所定レベルだけシフトする。 - 特許庁, The step ΔG of the electrode surface LM with respect to the reference electrode surface LS is appropriately set according to the differential electric potential from the electrode 12 on the high electric potential side.例文帳に追加, 基準電極面Ｌ_Ｓに対する電極面Ｌ_Ｍの段差ΔＧの大きさは、高電位側電極（１_２）との電位差に応じて適宜設定される。 - 特許庁, To provide an optical surface electric potential measuring device, capable of safely and exactly measuring the electric potential distribution on the spacer surface installed in between two counterposed plate electrodes.例文帳に追加, 対向配置される２枚の平板電極の間に介装されたスペーサ表面の電位分布を安全かつ正確に測定できる光学式表面電位測定装置を提供すること。 - 特許庁, An electric potential difference between a compound containing Al and N and a matrix, is increased by reducing the electric potential of the matrix, consequently the solubility of the aluminum foil is improved.例文帳に追加, マトリックスの電位を下げることで、ＡｌとＮｉを含む化合物とマトリックスとの電位差を大きくし、アルミニウム箔の溶解性を向上する。 - 特許庁, The resistors 17 are provided corresponding to each electrode 15 and divide an DC output voltage from a DC power supply 19 and generate a DC output electric potential to give the DC output electric potential to the corresponding electrode 15.例文帳に追加, この分圧抵抗１７は、各電極１５に対応して設けられており、直流電源１９からの直流出力電圧を分圧して直流出力電位を生成し、当該直流出力電位を対応する電極１５に与えている。 - 特許庁, In the electrooptical layer 50, the region corresponding to the pixel electrode 15 to which an electric potential VH is applied displays black color and the region corresponding to the pixel electrode 15 to which an electric potential VL is applied displays white color.例文帳に追加, 電気光学層５０は、電位ＶHが印加された画素電極１５に対応する領域が黒色を表示し、電位ＶLが印加された画素電極１５に対応する領域が白色を表示する。 - 特許庁, This area A is of a recessed shape 11, and its electrode surface LM is lower than a reference electrode surface LS to reduce the differential electric potential from the electrode (12) On the high electric potential side (preferably 1.0 V or under).例文帳に追加, この領域Ａを凹陥形状(11)としてその電極面Ｌ_Ｍを基準電極面Ｌ_Ｓより低くし、高電位側電極（１_２）との電位差を少なくする（好ましくは１．０Ｖ以下）。 - 特許庁, A shielding part 80 is mounted slidably on the casing 10, and the external electric field exerting an influence on the electric potential of the metal plate 70 is shielded when initializing the electric potential of the metal plate 70.例文帳に追加, また、筐体１０には、摺動自在に遮蔽部８０が取り付けられており、金属プレート７０の電位を初期化する際、この金属プレートの電位に影響を及ぼす外来の電界を遮蔽する。 - 特許庁, A power supply circuit 33 to generate a low potential side power supply electric potential Gnd and a common electric potential Vcom to be applied to the counter electrode 171 is mounted on a wiring substrate 30.例文帳に追加, 配線基板３０には、低位側電源電位Ｇｎｄと対向電極１７１に印加されるコモン電位Ｖcomとを生成する電源回路３３が実装されている。 - 特許庁, The lock 20 controls unlocking by transmitting an unlocking signal to an unlocking system 25 when authenticating the key 10 by collating the electric potential of the respective contact points by the lock side circuit 22 by taking in the electric potential as pattern data.例文帳に追加, 錠２０は、各接点の電位をパターンデータとして取り込んで錠側回路２２で照合し、鍵１０を認証した場合には解錠システム２５に解錠信号を発信して解錠制御を行う。 - 特許庁, As shown by the flow 20 of the Underwater Electric Potential (UEP), the underwater electric potential flows from the anode 21 to the cathode 22 of the model ship 11.例文帳に追加, 水中電界（ＵＥＰ）の流れ２０で示すように、船舶模型１１のアノード(陽極)２１からカソード(陰極)２２に向かって水中電界が流れている。 - 特許庁, Consequently, electric potential difference arises between a valve surface 14 and the piston 4 and electric field is generated when high voltage electric potential of different polarity is applied to the conductive part 21 and the connecting rod 5 respectively at the high voltage power source part 20.例文帳に追加, このため、高圧電源部２０で導電部２１とコネクティングロッド５とにそれぞれ極性の異なる高電圧の電位を与えると、バルブ面１４とピストン４とに間に電位差が生じ、電場が作り出される。 - 特許庁, A level shift power supply circuit 41a supplies the level shift electric potential VA1 to the first level shift circuit 41b and the second level shift circuit 41c, based on a predetermined power supply voltage Vcc and the second reference electric potential Vss.例文帳に追加, レベルシフト用電源回路４１ａは、所定の電源電圧Ｖｃｃおよび第２の基準電位Ｖｓｓを基に、第１のレベルシフト回路４１ｂおよび第２のレベルシフト回路４１ｃへレベルシフト用電位ＶＡ１を供給する。 - 特許庁, The electrolyte 24 contains a sulfur compound, such as LiCF_3SO_3, LiN(CF_3SO_2)_2, or dimethyl sulfoxides, in which the oxidation electric potential is lower than the electric potential of the anode 21 when it is fully charged.例文帳に追加, 電解質２４は、ＬｉＣＦ_3 ＳＯ_3 、ＬｉＮ（ＣＦ_3 ＳＯ_2 ）_2 またはジメチルスルフォキシドなどの酸化電位が満充電時の正極２１の電位より低い硫黄化合物を含んでいる。 - 特許庁, All electric potential is impressed on column wires of a surface conduction type emission element substrate 101 by a buffer amplifier 107, and the electric potential is impressed on one row of row wire selected by a line selection circuit 102.例文帳に追加, バッファアンプ１０７によって電位が印加されて表面伝導型放出素子基板１０１の列配線に電位が印加され、ライン選択回路１０２により選択された１行の行配線に電位が印加される。 - 特許庁, An electric potential is impressed on column wires of a surface conduction type emission element substrate 101 by a buffer amplifier 107, and the electric potential is impressed on one row of row wire selected by a line selection circuit 102.例文帳に追加, バッファアンプ１０７によって電位が印加されて表面伝導型放出素子基板１０１の列配線に電位が印加され、ライン選択回路１０２により選択されたの１行の行配線に電位が印加される。 - 特許庁, A second electrode 54 is made to be a grounding electric potential (GND), and a first electrode 52 and a driving IC are connected with each other to apply a positive electric potential on the first electrode 52.例文帳に追加, 第２の電極５４を接地電位（ＧＮＤ）とし、第１の電極５２と駆動ＩＣを接続して、第１の電極５２に正電圧を印加するようにしている。 - 特許庁, Exhaust pipes 101A-101C have areas such as conductance valves 102A-102C, and a manifold 128 which can be exposed to plasma discharge, and these form grounding electric potential parts of the grounding electric potential.例文帳に追加, 排気配管１０１Ａ〜Ｃが、プラズマ放電に曝される可能性があるコンダクタンスバルブ１０２Ａ〜Ｃや集合配管１２８といった領域を有し、かつこれらはアース電位となるアース電位部である。 - 特許庁, The multiple portions 74, retaining the solution, are set in order that multiple kinds of surface, showing surface electric potential or zeta electric potential different each other, can be touched with the solution at the same time.例文帳に追加, 溶液を保持するための複数の部分７４においてそれぞれ、互いに異なる表面電位またはゼータ電位を示す複数種の表面が溶液に同時に接触できるように配置されている。 - 特許庁, To reduce the potential difference between electric potential at the surface of a wafer and electric potential at a chemical nozzle by removing at least one of static electricity on the surface of the wafer and static electricity on the chemical nozzle.例文帳に追加, ウエハの表面に存在する静電気、及び薬液ノズルに存在する静電気のうちの少なくとも一方を除電することによって、ウエハの表面での電位と薬液ノズルでの電位との間にある電位差を減少させる。 - 特許庁, Electric potential of the semiconductor substrate 20 is fixed when a desired voltage is supplied to the semiconductor substrate 20 from the wiring for substrate electric potential through the rear side contact 22.例文帳に追加, 基板電位用配線から裏面側コンタクト部２２を介して、半導体基板２０に所望の電圧が供給されることにより、半導体基板２０の電位が固定される。 - 特許庁, To apply an electric potential sufficient for certainly maintaining a thyristor in an off state while preventing deterioration of the thyristor by inhibiting continuation of such electric potential application for a long time.例文帳に追加, サイリスタを確実にオフ状態に維持できるのに十分な電位を印加することができ、かつ、そのような電位の印加が長時間続かないようにすることで、サイリスタの劣化を防ぐ。 - 特許庁.