KnowledgeBoat Logo

Physics

An appliance rated 440 W, 220V is connected across 220V supply.

(a) Calculate the maximum current that the appliance can draw.

(b) Calculate the resistance of the appliance.

Current Electricity

ICSE 2022

14 Likes

Answer

(a) Maximum current drawn = I = WV\dfrac{\text{W}}{\text{V}} = 440220\dfrac{440}{220} = 2A

(b) Resistance of the appliance = R = WI2\dfrac{\text{W}}{\text{I}^2} = 4404\dfrac{440}{4} = 110Ω

Answered By

10 Likes


Related Questions