Question

Calculate the amount of work done to carry 4C from a point at 100 V to a point at 120 volt?

Answer 1

The answer to the question is 80 J i.e work done by the charge particle is 80 Joule.

CALCULATION:

As per the question, the charged particle has charge q = 4C.

The particle moves from a point at 100 V to a point at 120 V.

We are asked to calculate the work done.

The work done by a charged particle of charge q which moves from any point A to B which are at potentials $V_{A}\ and\ V_{B}$ is calculated as -

                      Work done W = $q\times (V_{B} -V_{A})$

                                              = 4C × ( 120 V-100 V)

                                              = 4C × 20 V

                                              = 80 Joule.                 [ANS]

Here, Joule is the unit of work done.