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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. A minimum resistance is to be prepared from a copper wire, its length and diameter should be


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2. What is the current (i) in the circuit as shown in figure .


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3. 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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4. A wire of resistance 10 Ω is bent to form a circle,Pand Q are points on the circumference of the circle dividing it into a quadrant and are connected to a battery of 3 V and internal resistance 1 Ω as shown in the figure. The currents in the two parts of the circle are .


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5. Two wires A and B of same material and same mass have radius 2 r and r. If resistance of wire A is 34 Ω, then resistance of B will be


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