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When no current is passed through a cond...

When no current is passed through a conductor,

A

the free electrons do not move

B

the average speed of a free elec ron over a large period of time is zero

C

the average velocity of a free electron over a large period of time is zero

D

the average of square of velocities of all the free electrons at an instant is zero.

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ALLEN -CURRENT ELECTRICITY-EX.II
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  2. The resistance across P and Q in the given figure is

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  3. When no current is passed through a conductor,

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  4. A steady current flows in a metallic conductor of non-uniform cross-se...

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  5. Internal resistance of a cell depends on

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  6. The resistance of the circuit between A and B is:-

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  7. The number of free electrons per 100 mm of ordinary copper wire is 2xx...

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  8. The potential difference between the terminals of a cells is found to ...

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  9. What is the reading of ammeter is adjoining circuit diagram.

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  10. The following diagram shows the circuit for the comparision of e.m.f. ...

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  11. In the following circuit the reading of the voltmeter will be:-

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  12. In the following diagram the deflection in the galvanometer in a poten...

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  13. In the circuit shown the resistance of voltmeter is 10000 ohm and that...

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  14. Value of Current i in the following circuit is:-

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  15. The resistance of galvanometer is G ohm and the range is 1 volt. The v...

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  16. The total resistance between x and y in ohm is:-

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  17. In an experiment to measure the internal resistance of a cell by a pot...

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  18. There are n similar conductors each of resistance R . The resultant re...

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  19. A galvanometer of resistance 100Omega gives full scale deflection for ...

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  20. If only 2% of the main current is to be passed through a galvanometer ...

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