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Magnetic field induction at the centre o...

Magnetic field induction at the centre of a square loop of side 'a' carrying current I as shown in figure is

A

`(mu_(0)I)/(sqrt2pia)`

B

`(2mu_(0)I)/(pia)`

C

`(mu_(0)I)/(2pia)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
AB and DC,AD and BC are the two current carrying pairs .They are so situated that current of each pair produce equal and opposite magnetic field at the centre O of the loop. Hence ,The resultant field induction at the centre O of the loop is zero.
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