Question

what is the resistance of a clock if it has a current of 0.30 a and runs on a 9.0 - v battery?
0.033 ω
2.7 ω
9.3 ω
30 ω

Explanation:

Step1: Recall Ohm's Law

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

Step2: Substitute the given values

Given \(V = 9.0\space V\) and \(I=0.30\space A\). Substitute these into the formula: \(R=\frac{9.0}{0.30}\).

Step3: Calculate the value of \(R\)

\(\frac{9.0}{0.30}=30\)

Answer:

D. \(30\space\Omega\)