Chapter 22.1, Problem 2PP

To determine

Electrical current through light bulb.

Answer to Problem 2PP

  $I=0.6\text{A}$

Explanation of Solution

Given:

Power of light bulb, $P=75\text{W}$

Applied voltage, $V=125\text{V}$

Formula Used:

The electrical power is given as,

  $P=VI$

Where, $P$ is electrical power, $V$ is applied voltage and $I$ is current produced.

Calculation:

On substituting the given values in above relation,

  $\begin{array}{c}75=125\times I\\ I=\frac{75}{125}\text{A}\\ =\text{0}\text{.6}\text{A}\end{array}$

Conclusion:

Therefore, the electrical current through light bulb is $I=0.6\text{A}$ .