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A long rigid wire liens along the X - ax...

A long rigid wire liens along the X - axis and carries a current of 10 A in the positive X - direction . Round the wire , the external magnetic field is `vec(B)= hati+2x^2hatj` with x in metres and B in Tesla. The magnetic force (in Sl units ) on the segment of the wire between x = 1m and x = 4 m is

A

1260

B

`(1280)/(3)`

C

1310

D

420

Text Solution

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The correct Answer is:
D
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