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A long straight wire carrying current of `30 A` is placed in an external unifrom magnetic field of induction `4xx10^(4) T`. The magnetic field is acting parallel to the direction of current. The maggnetic of the resultant magnetic inuduction in tesla at a point `2.0 cm` away form the wire is

A

`10^(-4) `

B

`3 xx 10^(-4) `

C

`5 xx 10^(-4)`

D

`6 xx 10^(-4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`B = sqrt(B_1^2 + B_2^2)`
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NARAYNA-MOVING CHARGES AND MAGNETISM-EXERCISE - 2(C.W) (AMPERE.S CIRCUITAL LAW BIO-SAVART LAW AND ITS APPLICATIONS)
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  11. A wire of length 10cm is bent into an arc of a circle such that it sub...

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  12. A circular coil of radius 'r' having 'n' turns carries a current 'I'. ...

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  14. Two long straight conductors with corrents I(1) and I(2) are placed al...

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  15. Magnetic field induction at the center of a circular coil of radius 5c...

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  16. The magnetic induction at the centre of a current carrying circular co...

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