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The figure shows a long wire bent in the middle to form a right angle. The magnitudes of the magnetic fields at Points P, Q, R and S are B1, B2, B3 and B4 respectively. The wire and the circumference of the circle are co-planar.

Option: 1

B1 = B2 = B3 = B4


Option: 2

B1 = 2 B2


Option: 3

B3 = 2 B4


Option: 4

None of these


Answers (1)

best_answer

If we find:

B1 at P is:

                B1 = \frac{\mu_{0}i}{d}

B2 at Q is:

                B2 = \frac{\mu_{0}i}{d}

B3 at R is:

                B3 = \frac{\mu_{0}i}{d}

B4 at S is:

                B4 = \frac{\mu_{0}i}{d}

So, here, B1 = B2 = B3 = B4.

Posted by

jitender.kumar

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