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A circular loop of radius R, carrying cu...

A circular loop of radius `R`, carrying current `I`, lies in `x-y` plane with its center at origin. The total magnetic flux through `x-y` plane is

A

directly proportional to `I`

B

directly proportional to `R`

C

directly proportional to `R^(2)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
Circular loop behaves as a magnetic dipole whose one surface will be `N`-pole and another will be `S`-pole. Therefore magnetic lines a force emerges from `N` will meet at `S`. Hence total magnetic flux through `x-y` plane is zero.
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A2Z-ELECTROMAGNETIC INDUCTION-Section D - Chapter End Test
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  2. Two circular coils A and B are facing each other as shown in figure. T...

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  3. If in a coil rate of change of area is (5meter^(2))/(milli second)and ...

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  4. Two coils P and Q are placed co-axially and carry current I and I' re...

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  5. The phase difference between the flux linkage and the induced e.m.f. i...

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  6. A hundred turns of insulated copper wire are wrapped around an iron cy...

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  8. In a transformer, number of turns in the primary coil are 140 and that...

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  9. Two coil are placed close to each other. The mutual inductance of the ...

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  10. When the current changes from +2A to -2A in 0.05 second, an e.m.f. of ...

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  11. A coil having n turns and resistance R Omega is connected with a galva...

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  12. A metal conductor of length 1m rotates vertically about one of its end...

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  13. A coil of inductance 300mh and resistance 2Omega is connected to a sou...

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  15. A circular loop of radius R, carrying current I, lies in x-y plane wit...

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  16. A metallic square loop ABCD is moving in its own plane with velocity v...

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  17. As shown in the figure, P and Q are two coaxial conducting loops separ...

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  18. A short-circuited coil is placed in a time-varying magnetic field. Ele...

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  19. Assertion: The quantity L//R possesses dimensions of time. Reason: T...

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