Chapter 6.3, Problem 29R

To determine

To calculate: Power used by the circuit breaker.

Answer to Problem 29R

Power used by the circuit breaker is $\underset{\_}{1800\text{ W}}$ .

Explanation of Solution

Given:

Voltage difference = $\text{120 V}$

Current = $\text{15 A}$

Formula used:

Power is given by,

  $P=IV$

where $I$ is current and $V$ is voltage difference.

Calculation:

Power is calculated as:

  $\begin{array}{l}P=IV\\ =(15\text{ A})(120\text{ V})\\ =1800\text{ W}\end{array}$

Conclusion:

Power used by the circuit breaker is $\underset{\_}{1800\text{ W}}$ .