Physics
An electrical appliance has a rating 100 W, 120 V. The resistance of element of appliance when in use is —
- 1.2 Ω
- 144 Ω
- 120 Ω
- 100 Ω
Current Electricity
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Answer
144 Ω
Reason — Resistance of an electrical appliance (rating 100 W, 120 V) is —
Substituting the values in the formula above we get,
Hence, resistance of an electrical appliance = 144 Ω
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