Question

The current through a 10-ohm resistor connected to a 120-V power supply is a. 1200 A d. 12 A b. 1 A e. 10 A c. 120 A

Answer 1

Answer:

d. 12 A

Explanation:

The current and the voltage in a resistor are related by Ohm's Law:

$V=IR$

where

V is the potential difference across the resistor

I is the current in the resistor

R is the resistance

In this problem, we have

$V=120 V$ is the potential difference across the resistor

$R=10\Omega$ is the resistance

Solving the equation for I, we find the current:

$I=\frac{V}{R}=\frac{120 V}{10 \Omega}=12 A$