A pair of 60-W and 100-W incandescent lamps are intended for 120-V operation. Which lamp draws more current?
A)60-W lamp
B)100-W lamp
C)both the same

Question

Quizplus · Accepted Answer

To calculate the current drawn by each lamp, we can use Ohm's Law:

I = P/V

where I is the current in amperes (A), P is the power in watts (W), and V is the voltage in volts (V).

For the 60-W lamp:

I = 60/120 = 0.5 A

For the 100-W lamp:

I = 100/120 = 0.83 A

Therefore, the 100-W lamp draws more current than the 60-W lamp.

A Pair of 60-W and 100-W Incandescent Lamps Are Intended