- ARemains constant
- BIncreases
- CDecreases
- DBecomes zero
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When a potential difference is applied across the ends of a linear metallic conductor
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(a) The free electrons are accelerated continuously from the lower potential end to the higher potential end of the conductor |
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(b) The free electrons are accelerated continuously from the higher potential end to the lower potential end of the conductor |
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(c) The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor |
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(d) The free electrons are set in motion from their position of rest |
Unit of magnetic permeability is
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(a) Amp/metre |
(b) Amp/ |
(c) Henry |
(d) Henry/metre |
In a full wave rectifiers, input ac current has a frequency ‘n’. The output frequency of current is
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(a) n/2 |
(b) n |
(c) 2n |
(d) None of these |

A 3volt battery with negligible internal resistance is connected in a circuit as shown in the figure. The current I, in the circuit will be

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(a) 1/3 A |
(b) 1 A |
(c) 1.5 A |
(d) 2 A |