Electric potential at a point due to 2 charges q 1 =+3 nC at 1 m and q 2 =-3 nC at 1 m (equal distances, same point):

⚛️ Physics · Electrostatic Potential and Capacitance · NEET & JEE

Electric potential at a point due to 2 charges q1=+3 nC at 1 m and q2=-3 nC at 1 m (equal distances, same point):

Answer: 0 V.

A 54 V
B 27 V
C 0 V
D 108 V

Correct answer: C. 0 V

Explanation: V = V1 + V2 = kq1/r + kq2/r = k(q1+q2)/r = k x 0 / r = 0. Equal and opposite charges at equal distance give zero potential.

Radial electric field lines and concentric red equipotential lines around a point charge (an electron), with field lines pointing inward

Field lines (radial) and equipotential lines (concentric circles) of a point charge. Equipotential surfaces are always perpendicular to the field lines. Image: Sjlegg, Public Domain, via Wikimedia Commons.

Concept context

Electric potential, equipotential surfaces, potential energy of charge systems, conductors, dielectrics, capacitors, combinations, and energy storage.

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Electric potential at a point due to 2 charges q<sub>1</sub>=+3 nC at 1 m and q<sub>2</sub>=-3 nC at 1 m (equal distances, same point):

Concept context

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