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Two concentric circular coils A and B h...

Two concentric circular coils `A` and `B` have radii `25cm` and `15cm` and carry currents `10A` and `15A` respectively. A has 24 turns and `B` has 18 turns. The direction of currents are in opposite order. The magnetic induction at the common centre of the coil is

A

`120 mu_0 T`

B

`480 mu_0 T`

C

`420 mu_0 T`

D

`mu_0 T`

Text Solution

Verified by Experts

The correct Answer is:
C
`B = B_1 - B_2`
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NARAYNA-MOVING CHARGES AND MAGNETISM-EXERCISE - 1(C.W) (AMPERE.S CIRCUITAL LAW BIOT-SAVART LAW AND ITS APPLICATIONS)
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  10. Two circular coils are made of two identical wires of same length and ...

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  11. Two circular coils have diameters 10cm and 20cm with same number of tu...

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  12. A wire carrying a current of 4A is in the form of the circle. It is ne...

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  13. Two concentric circular coils A and B have radii 25cm and 15cm and ca...

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