ICSE Class 10 Physics 2022 Solved Paper

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An appliance rated 440W,220V is connected across 220V supply.
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Question : 33
Total: 45
Calculate the resistance of the appliance.
Solution:  
Let P=VI and I=‌
V
R

∵‌‌P‌=‌
V2
R

R‌=‌
V2
P

‌=‌
220×220
440

‌=110Ω
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