Question

what is the resistance in this circuit?
a) 4 ω
b) 4 watts
c) 6 ω
d) 12 watts

Explanation:

Step1: Recall Ohm's Law

Ohm's Law is $V = IR$, where $V$ is voltage, $I$ is current and $R$ is resistance. We can solve for $R$ as $R=\frac{V}{I}$.

Step2: Identify values from the circuit

From the circuit, $V = 12V$ and $I=3A$.

Step3: Calculate resistance

Substitute values into the formula: $R=\frac{12V}{3A}=4\Omega$.

Answer:

A. 4 Ω