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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. If six identical cells each having an emf of 6 V are connected in parallel, the emf of the combination is


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2. By increasing the temperature, the specific resistance of a conductor and semiconductor


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3. A wire of 50 cm long and 1 mm² in cross-sectional area carries a current 4A when connected to a 2V battery. The resistivity of the wire is


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4. A uniform resistance wire of length L and diameter d has a resistance R. Another wire of same material has length 4L and diameter 2d, the resistance will be


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5. A uniform wire of resistance R is uniformly compressed along its length, until its radius becomes n times the original radius. New resistance of the wire becomes


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