A resistance heater is rated at 1200 W when operating at 110 V dc.What current will it draw?
A)0.090 A
B)1.0 A
C)11 A
D)12 A

Question

Quizplus · Accepted Answer

Using the formula P = VI, we can rearrange it to solve for I:
I = P / V

Plugging in the given values, we get:

I = 1200 W / 110 V 
I = 10.91 A

However, since the question asks for the current to the nearest hundredth of an ampere, we round off the answer to two decimal places:

I = 11 A

Therefore, the correct choice is C.

A Resistance Heater Is Rated at 1200 W When Operating