House voltage is 240 volts. If a light bulb runs a current of 0.5 amps, what's the resistance of the bulb?

480 Ohms

Explanation:

Resistance: This can be defined as a opposition to current flow in an electric circuit. The S.I unit of resistance is  ohms(Ω).

From the question,

V = IR Equation 1

Make R the subject of the equation

R = V/I Equation 2

V = The House voltage, I = Current, R = Resistance of the bulb.

Given: V = 240 Volts, I = 0.5 Amps.

Substitute into equation 2

R = 240/0.5

R = 480 Ohms

Hence the resistance of the bulb is 480 Ohms

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