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A 4Ω resistance wire is doubled by folding it, the new resistance is (A) 1Ω (B) 2Ω (C) 3Ω (D) None of these |
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Answer» (A) 1Ω ⇒ Req = 2 x 2 / 2 + 2 ⇒ Req = 1Ω |
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