Work done by an external force in bringing a unit positive charge from infinity to a point is

Question

Work done by an external force in bringing a unit positive charge from infinity to a point is (A) equal to the electrostatic potential (V) at that point (B) equal to the negative of work done by electrostatic forces (C) Both (a) and (b) (D) Neither (a) nor (b)

Tardigrade Admin · Accepted Answer

Considering potential to be zero at infinity. Work done by an external force in bringing a unit positive charge from infinity to a point without acceleration

= -

Work done by electrostatic forces

=

Electrostatic potential

(V)

at that point

Q. Work done by an external force in bringing a unit positive charge from infinity to a point is

equal to the electrostatic potential $(V)$ at that point

equal to the negative of work done by electrostatic forces

Both (a) and (b)

Neither (a) nor (b)

Considering potential to be zero at infinity. Work done by an external force in bringing a unit positive charge from infinity to a point without acceleration
$= -$ Work done by electrostatic forces
$=$ Electrostatic potential $(V)$ at that point