Chapter 21, Problem 74A

To determine

Work done on charge.

Answer to Problem 74A

  $W=1.35\text{J}$

Explanation of Solution

Given:

Charge, $q=0.15\text{C}$

Potential difference, $\Delta V=9\text{V}$

Formula Used:

The work done is given as,

  $W=q\Delta V$

Where, $W$ is work done, $q$ is charge and $\Delta V$ is potential difference.

Calculation:

On substituting the given values in above relation,

  $\begin{array}{c}W=0.15\times 9\\ =1.35\text{J}\end{array}$

Conclusion:

Therefore, the work done on electron is $W=1.35\text{J}$ .