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A very long solenoid has 8400 winding an...

A very long solenoid has 8400 winding and a length of 7m. If the field inside is `2pi xx 10^-3 T`, the current in the windings is about [`mu_0 = 4pi xx 10^-7 T m//A`]

A

0.42 A

B

0.83 A

C

4.2 A

D

8.3 A

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CHETANA PUBLICATION-Magnetic Fields due to Electric Current-Exercise
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  2. A solenoid of length 1.5 m and diameter 4 cm has 10 turns per meter. A...

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  3. A very long solenoid has 8400 winding and a length of 7m. If the field...

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  7. A conductor of length lm and carrying current of 1A is placed at an an...

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  8. The maximum force acting on a straight conductor of length 15 cm place...

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  9. A force of 1.732 xx 10^-2 N acts on a particle of charge moving with a...

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  10. The force acting on a particle of charge q moving in a uniform magnets...

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  11. In Bohr's model if hydrogen atom, the electron circulates around nucle...

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  12. Two circular coils are made of two identical wires of same length. If ...

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  13. A circular coil having 50 turns each of radius 0.05 m carries a curren...

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  14. The ratio of magnetic induction at a point along the axis of a circula...

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  15. A square coil of side 10 cm consists of 20 turns and carries 12 A. The...

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  16. Two long and straight conductors, placed parallel to each other are se...

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  17. The magnetic moment of a square coil having 5 turns, each side measuri...

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  18. A long straight wire carries a current of 50 A. An electron moving at ...

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  19. The magnetic induction at a point on the axis of a circular current ca...

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  20. Choose the correct option:- Cyclotron cannot accelerate

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