Question

an external agency carries - 5C of charge from infinity to a point in an electrostatic field and performs 100 joule of work. The potential at the given point is?​

Answer 1

Given that,

Work = 100 J

Charge = -5C

We need to calculate the potential  at the point

Using formula of potential

$V=\dfrac{W}{Q}$

Where, W = work done

Q = magnitude of charge

Put the value into the formula

$V=\dfrac{100}{5}$

$V=20\ Volt$

Hence, The potential at the given point is 20 V.