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When the switch is closed, then initial current through 1 resistor is (see figure)
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Correct option is B
Initially cement through the capacitor will be maximumSo 6 Ω and 3 Ω are in parallel total resistance6×39+1=3Ωi=123=4Ω
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In an electrical cable there is a single wire of radius 9 mm of copper. Its resistance is 5Ω . The cable is replaced by 6 different insulated copper wires, the radius of each wire is 3 mm . Now the total resistance of the cable will be
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