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A circular coil carrying a certain, curr...

A circular coil carrying a certain, current produces a magnetic field `B_(0)` at its center. The coil is now rewound so as to have 3 turns and the same currents is passed through it. The new magnetic field at the center is

A

`(B_(0))/9`

B

`9B_(0)`

C

`(B_(0))/3`

D

`3B_(0)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-MOVING CHARGE AND MAGNESIUM-EXERCISE
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  6. Magnetic field at point O due to the given structure is

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  7. Magnetic field at the centre O due to the given structure is

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  8. A solenoid 1.5 metre and 4.0 cm in diameter possesses 10 turns/cm. A c...

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  9. Two thick wires and two thin wires, all of the same materials and same...

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  10. Current I flows through solenoid of length L having N number of turns,...

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  12. A conducting loop carrying a current l is placed in a uniform magnetic...

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  16. A small circular flexible loop of wire of radius r carries a current I...

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  17. Two circular coils mounted parallel to each other on the same axis car...

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  18. A long straight wire is carrying a current of 25 A. A squre loop of si...

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  19. Three long, straight and parallel wires carrying currents are arranged...

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