Question

What is the working resistance of a bulb that takes a current of 0.25 A when it is connected to 220V mains supply?

Answer 1

880 Ω (Ohms)

Step-by-step explanation:

To calculate Resistance from Potential Difference (Volts) and Current (Amps), you use the equation R = V/I

So,

R = 220/0.25

R= 880