Chapter 10, Problem 6TS

Begin with the definition of power (current x voltage) and then show that the current in a $6\text{W}$ clock radio operating in a common $120\text{V}$ circuit is $0.05\text{A}$ .

Solution

To determine:The current.

Answer:

The current is $0.05\text{A}$ .

Explanation:

Given info: The voltage is $120\text{V}$ and the power is $6\text{W}$ .

Write the expression for the power.

$\begin{array}{c}P=VI\\ I=\frac{P}{V}\end{array}$

Here,

$V$ is the voltage

$I$ is the current

Substitute $6\text{W}$ for $P$ and $120\text{V}$ for $V$ in the above expression to get $I$ .

$\begin{array}{c}I=\frac{6\text{W}}{120\text{V}}\\ =0.05\text{A}\end{array}$

Conclusion:

Therefore, the current is $0.05\text{A}$.