The Voltage of a Flashlight Bulb

Calculating the Voltage Rating of a Flashlight Bulb

A flash light bulb is labeled to use 1.22 A and its resistance is 1.30 Ω. What voltage is the light bulb rated for?

Question:

What voltage is the light bulb rated for?

Answer:

1.58722 volts

Explanation:

Potential difference = current × resistance

Potential difference = 1.22 × 1.30

Potential difference = 1.58722 volts