if r1 and r2 be the resistance of the filament of 60w and 200w, operating at 220V, then: options: 1. R1 = R2 2. R1 > R2 3. R1 < R2 4. R1 ≥ R2
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Answer:
3. R1<R2
Explanation:
P=IV
Greater the voltage greater is the Power, so greater is the resistance. (V=IR)
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