Question

4.) an alarm clock draws 0.5a of current when connected to a 120v circuit. calculate the resistance.

Explanation:

Step1: Recall Ohm's Law

Ohm's Law is given by \( V = IR \), where \( V \) is voltage, \( I \) is current, and \( R \) is resistance. We need to solve for \( R \), so rearrange the formula to \( R=\frac{V}{I} \).

Step2: Substitute the given values

We know \( V = 120 \, \text{V} \) and \( I = 0.5 \, \text{A} \). Substitute these into the formula: \( R=\frac{120}{0.5} \).

Step3: Perform the calculation

\( \frac{120}{0.5}=240 \, \Omega \).

Answer:

The resistance of the alarm clock is \( 240 \, \Omega \).