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When a current loop is placed in a unifo...

When a current loop is placed in a uniform magnetic field
i) `barF_(R)=0` and `bartau=0` ii) `barF_(R)=0` but `bartaune0`
iii) `barF_(R)ne0` but `bartau=0` iv) `barF_(R)ne0` and `bartaune0`

A

Only i & ii are true

B

Only ii & iii are true

C

Only iii & iv are true

D

Only i & iv are true

Text Solution

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A
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  2. The plane of the coil of tangent galvanometer is kept parallel to magn...

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  4. If 'r' is the radius and 'n' is number of turns of coil of a T.G, then...

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  5. A rectangular loop carrying a current i(2) situated near a long straig...

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  6. When a current loop is placed in a uniform magnetic field i) barF(R)...

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  7. A flat , rectangular coil, carrying current, is placed beside a long s...

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  8. A moving coil galvanometer can be converted into a voltmeter by connec...

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  9. The correct statement among the following is:

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  10. Statement A : The resistance of ideal ammeter is zero Statement B : ...

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  11. Statement A: Ammeter is a low resistance galvanometer Statement B: V...

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  12. To increase the range of a voltmeter we need to connect a suitable:

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  13. An ammeter and a voltmeter of resistance R are connected in series to ...

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  14. Two identical galvanometers are converted into an ammeter and a millia...

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  15. A galvanometer of resistance, G, is shunted by a resistance S ohm. To ...

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  16. A galvanometer can be converted into either an ammeter or a voltmeter....

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  17. The correct match is

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  18. The correct match is

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  20. Arrang the following in decreasing order of their boiling points. A....

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