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Physics - Current Electricity Questions and Answer >>

1 2 3 4 5  Next >>  Page 1 of 10 pages (50 Objective Questions)

1. In the following figure potential difference between A and B is .

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2. The resistance of an incandescent lamp is

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3. A metal wire of specific resistance 64 x 10-6 Ωcm and length 198 em has resistance of 7 Ω. The radius of the wire will be

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4. Two resistance wires on joining in parallel, the resultant resistance is 6/5 Ω. One of the wire breaks. The effective resistance is 2 Ω. The resistance of the brokes wire was

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5. An unknown resistance R1 is connected in series with a resistance of 10Ω. This combination is connected to one gap of a metre bridge while a resistance R2 is connected in the other gap. The balance point is at 50 em. Now, when the 10 Ω resistance is removed the balance position shifts to 40 em. The value of R1 is (in ohm)

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