Question

a subwoofer needs a household voltage of 110 v to push a current of 5.5 a through its coil. what is the resistance of the subwoofer?

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 rearrange the formula to $R=\frac{V}{I}$.

Step2: Substitute the given values

We are given that $V = 110$ V and $I = 5.5$ A. Substituting these into the formula $R=\frac{V}{I}$, we get $R=\frac{110}{5.5}$.

Step3: Calculate the value of R

$R=\frac{110}{5.5}= 20$ Ω.

Answer:

The resistance of the subwoofer is $20$ Ω.