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The unit vectors hati,hatj and hatk ar...

The unit vectors `hati,hatj and hatk` are as shown below. What will be the magnetic field at O in the following figure?

A

`(mu_(0))/(4pi)(i)/(a)(2-(pi)/(2))hat(j)`

B

`(mu_(0))/(4pi)(i)/(a)(2+(pi)/(2))hat(j)`

C

`(mu_(0))/(4pi)(i)/(a)(2+(pi)/(2))hat(i)`

D

`(mu_(0))/(4pi)(i)/(a)(2+(pi)/(2))hat(k)`

Text Solution

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The correct Answer is:
B
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