If a 500-W heater carries a current of 2.00 A,what is the voltage across the ends of the heating element?
A) 2000 V
B) 125 V
C) 0.008 V
D) 250 V

Question

Quizplus · Accepted Answer

We can use the formula for power, P = VI, to solve for V.

Given: 
P = 500 W 
I = 2.00 A

Substituting:
500 = V x 2.00

Solving for V:
V = 500/2.00 = 250 V

Therefore, the voltage across the ends of the heating element is 250 V. The best choice is D.

If a 500-W Heater Carries a Current of 2