How to Calculate Resistance of a Light Bulb in a Circuit

18 Jul 2021

What is the resistance of a light bulb in a circuit with a current of 0.73 Amps and a voltage of 120 Volts?

The resistance of the light bulb is 164.38 Ω

To find the resistance, we will use the formula:

V = I / R

where,

I = current

V = voltage

R = resistance

Given in the question,

I = 0.73 A

V = 120 V

Now, we will put the values in the formula:

R = V / I

R = 120 / 0.73

R = 164.38 Ω

Therefore, the resistance of the light bulb is 164.38 Ω