Find the potential difference required to flow a current of 200 mA in a wire of resistance $20 Ω$ .

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Solution

From the Ohm's law,
$V = I R = (200 \times 10^{- 3}) \times 20 = 4 V o l t s$ .

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Ohm's Law

Standard X Physics

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Find the potential difference required to flow a current of 200 mA in a wire of resistance 20 Ω.

From the Ohm's law,V=IR=(200×10−3)×20=4 Volts.

Find the potential difference required to flow a current of 200 mA in a wire of resistance $20 Ω$ .

From the Ohm's law,
$V = I R = (200 \times 10^{- 3}) \times 20 = 4 V o l t s$ .