Which device would draw the most current?
A) 60W household light bulb supplied with 120V AC
B) 60W truck low beam headlamp supplied with 12V
C) An inductor with a resistance of 120 ohms supplied with 12V
D) All of the above would draw the same amount of current

Question

Quizplus · Accepted Answer

The current drawn by a device is calculated using the formula I = P/V. For the 60W truck headlamp supplied with 12V, the current is 60W/12V = 5A, which is higher than the current drawn by the 60W household light bulb (60W/120V = 0.5A) and the inductor (12V/120Ω = 0.1A).

Which Device Would Draw the Most Current