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If an electric current is passed through a nerve of a man, then man

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Important Questions on Current Electricity

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If potential V=100±0.5 V and current I=10±0.2 A are given to us. Then, what will be the value of resistance?
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Given three equal resistors, how many different combinations of all the three resistors can be made?
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If a resistance R2 is connected in parallel with the resistance R in the circuit shown, then possible value of current through R and the possible value of R2 will be

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Two wires of same metal have the same length but their cross-sections are in the ratio 3:1. They are joined in series. The resistance of the thicker wire is 10 Ω. The total resistance of the combination will be
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Three unequal resistors in parallel are equivalent to a resistance 1 Ω. If two of them are in the ratio 1:2 and if no resistance value is fractional, the largest of the three resistances in ohms is
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A battery has emf 4 V and internal resistance r. When this battery is connected to an external resistance of 2 Ω, a current of 1 A, flows in the circuit. How much current will flow, if the terminals of the battery are connected directly?