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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 a wire of resistance R is melted and recasted to half of its length, then the new resistance of the wire will be. [KCET (Med.) 200]


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2. Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current ampere as shown in figure, the potential difference VP - VQ is .


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3. There is no current in 2 Ω resistance, then the equivalent resistance of the given circuit is .


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4. Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be


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5. There are three voltmeters of the same range but of resistances 10000 Ω, 8000 Ω and 4000 Ω respectively. The best voltmeter among these is the one whose resistance is


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