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A 10 ohm resistance wire is doubled on it. Calculate the new resistance of the wire. |
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Answer» Answer:2.5 OHM Explanation: R= ρl/A If resistance get DOUBLED, length of the wire halved and area of cross section will be doubled. i.e, R=ρ(l/2)÷2A = ρl/4A = 1/4*R If ρl/A= 10 (by QUESTION), NEW resistance = 10/4 = 2.5 ohm |
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