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A horizontal overhead powerline is at he...

A horizontal overhead powerline is at height of `4 m` from the ground and carries a current of `100 A` from east to west. The magnetic field directly below it on the ground is
`( nu_(0) = 4 pi xx 10^(-7) Tm A^(-1)`

A

`2.5 xx 10^(-7)` T southward

B

`5 xx 10^(-6)` T northward

C

`5xx 10^(-6)` T southward

D

`2.5xx10^(-7)` T northward

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-II
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  2. A circular coil is made from a wire of length 2m. Its radius is 4/pi c...

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  3. A horizontal overhead powerline is at height of 4 m from the ground an...

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  5. A current of 5A flows downwards in a long straight vertical conductor ...

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  6. A current of 1//(4pi) ampere is flowing in a long straight conductor. ...

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  7. Two long parallel wires placed 0.08 m apart, carry currents 3 A and 5...

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  8. Two long straight parallel conductors 10 cm apart, carry currents of 5...

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  9. A wire in the form of a square of side a carries a current i. Then, th...

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  10. The magnetic induction field at the centroid or an equilateral triangl...

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  11. A magnetic pole of strength 4 Am is moved twice around a long straight...

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  12. A long straight vertical conductor carries a current of 8A in the upwa...

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  13. The length of a solenoid is 0.1 m and its diameter is very small. A wi...

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  14. A long solenoid has 200 turns per cm and carries a current i. The magn...

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  15. The magnetic induction at the centre of a solenoid is B. If the length...

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  16. A solenoid of 0.4111 length with 500 turns carries a current of 3A. A ...

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  17. The perpendicular distance between two conductor of 12 m each is 0.15c...

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  18. Across a long conductor 2A current is flowing. At 10 cm from it anothe...

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  19. Two parallel conductors are separated by 5cm. They carry 6A and 2A in ...

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  20. A horizontal wire carries 200A current below which another wire of lin...

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