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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. The resistance of a conductor is 5 ohm at 50°C and 6 ohm at 100°C. Its resistance at 0°C is


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2. The internal resistance of a cell of emf 12 V is 5 x 10 -2 Ω . It is connected across an unknown resistance. Voltage across the cell, when a current of 60 A is drawn from it, is


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3. Read the following statements carefully Y: The resistivity of a semiconductor decreases with increase of temperature Z : In a conducting solid, rate of collisions between free electrons and ions increases with increases of temperature Select the correct statements (s) from the following


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4. Six identical cells of emf E and internal resistance r are connected in parallel, then the net emf and internal resistance of the combination will be


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5. The potential difference between points A and B of adjoining figure is .


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