NEET Physics Moving Charges and Magnetism Online Test Set B

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Question 1

Question

A steady current I flows down a hollow cylindrical tube of radius a and is uniformly distributed around the tube. Let r be the distance from the axis of symmetry of the tube to a given point. What is the magnitiude of the magnetic field B at a point inside the tube?

Answer

2 I r/a2c

0

2 I/r c

None of these