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InterviewSolution
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A 10 m long wire of resistance 20 Ω is connected in series with a battery of emf 3 V and a resistance of 10 Ω. The potential gradient along the wire in volt per meter is(a) 6.02 (b) 0.1 (c) 0.2 (d) 1.2 |
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Answer» (c) 0.2 Potential difference across the wire = \(\frac{20}{3}\) x3 = 2V Potential gradient = \(\frac{v}{l}\)= \(\frac{2}{10}\) = 0.2 v/m |
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