Question

question 20 of 25
what is the current in the 30.0 ω resistor?
120.0 v
a. 4.00 a
b. 32.0 a
c. 30.0 a
d. 2.00 a

Explanation:

Step1: Recall Ohm's Law

Ohm's Law is \(I=\frac{V}{R}\), where \(I\) is current, \(V\) is voltage, and \(R\) is resistance.

Step2: Determine voltage across \(30.0\ \Omega\) resistor

In a parallel circuit, the voltage across each resistor is the same as the battery voltage. So \(V = 120.0\ V\) for the \(30.0\ \Omega\) resistor.

Step3: Calculate current through \(30.0\ \Omega\) resistor

Substitute \(V = 120.0\ V\) and \(R=30.0\ \Omega\) into \(I=\frac{V}{R}\). So \(I=\frac{120.0}{30.0}=4.00\ A\).

Answer:

A. \(4.00\ A\)