Magnetic Effects Of Current Question 49

Question: A cell is connected between two points of a uniformly thick circular conductor. The magnetic field at the centre of the loop will be [MP PMT 1994]

Options:

A) Zero

B) $ \frac{{\mu_{0}}}{2a}(i_{1}-i_{2}) $

C) $ \frac{{\mu_{0}}}{2a}(i_{1}+i_{2}) $

D) $ \frac{{\mu_{0}}}{a}(i_{1}+i_{2}) $ (Here $ i_{1} $ and $ i_{2} $ are the currents flowing in the two parts of the circular conductor of radius ?a? and $ {\mu_{0}} $ has the usual meaning)

Show Answer

Answer:

Correct Answer: A

Solution:

See solution 34.