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प्रश्न
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
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उत्तर
Current (I) = 0.2 A
Resistance (R) = 20 ohm
Potential Difference (V) = ?
According to Ohm's Law :
V = IR
V = 0.2 × 20 = 4 V
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