Question

A heater rated 200w-220 is connected to a 220 v power supply calculate the resistance of the heater and current flowing through it

Answer 1

P = V²/R

200 = (220)²/R

R = (220)²/200

R = 242 Ω

Current = V/R = 220 / 242

Current = 0.91 Amp

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Answer 2

Answer:

R = 242ohm

i = 0.91amp

thanks