A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.
The resistance of the light bulb is 20 ohms.

Question

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. 
The resistance of the light bulb is 20 ohms.

Quizplus · Accepted Answer

We can use the formula V=IR, where V is the voltage, I is the current, and R is the resistance. Plugging in the given values, we get V=IR = 6 A x 20 Ω = 120 V, which confirms that the light bulb operates on 120 volts.

A Light Bulb Used in a Slide Projector Draws a Current