A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance.

by | Mar 23 | Physics WAEC | 0 comments

A. 1.2 Ω
B. 12,000 Ω
C. 20.0 Ω
D. 144 Ω

Correct Answer:

Option A = 1.2 Ω

Explanation

R = v/I

= 120/100
= 1.2Ω