If a lamp has a resistance of 120 W when it operates at 100 W,what current does it carry?
A)2.10 A
B)1.2 A
C)0.91 A
D)0.83 A

Name: If a lamp has a resistance of 120 W when it operates at 100 W,what current does it carry? A)2.10 A B)1.2 A C)0.91 A D)0.83 A
Brand: Quizplus
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Question

Quizplus · Accepted Answer

We can use the formula P=I^2R to solve for current (I), where P is power, R is resistance, and I is current.

Plugging in the given values:

100 W = I^2 x 120 Ω

Solving for I:

I = sqrt(100 W / 120 Ω)

I ≈ 0.91 A

Therefore, the answer is (C) 0.91 A.

If a Lamp Has a Resistance of 120 W When