Question

A fan with a resistance of 20 Ω is connected to a power supply. The current flowing through the circuit is 2.5 A.

What is the voltage of the power supply?

(1 point)

8.0 V
8.0 V

22.5 V
22.5 V

17.5 V
17.5 V

50.0 V

Answer 1

Answer: 50V

Explanation:

Use Ohm's Law, which states that the voltage is proprtional to the current. The proprtionality constant is the resistance:

`V=IR`

We are given the resistance in Ohms, and the current in Amps. Therefore:

`V=(2.5)(20)=50V`