A battery is connected between two points A and B on the circumference of a uniform conducting ring of radius r and resistance R. One of the arcs AB of the ring subtends an angle $ heta $ at the centre. The value of the magnetic induction at the centre due to the current in the ring is

Question

A battery is connected between two points A and B on the circumference of a uniform conducting ring of radius r and resistance R. One of the arcs AB of the ring subtends an angle $	heta $ at the centre. The value of the magnetic induction at the centre due to the current in the ring is

Accepted Answer

Zero for all values of $	heta $

Answer

Proportional to $2\,(180^\circ - 	heta )$

Answer

Inversely proportional to r

Answer

Zero, only if $	heta = 180^\circ $

Moving Charges and Magnetism

Question: A battery is connected between two points A and B on the circumference of a uniform conducting ring of radius r and resistance R. One of the arcs AB of the ring subtends an angle $\theta $ at the centre. The value of the magnetic induction at the centre due to the current in the ring is

Moving Charges and Magnetism

Question: A battery is connected between two points A and B on the circumference of a uniform conducting ring of radius r and resistance R. One of the arcs AB of the ring subtends an angle $\theta $ at the centre. The value of the magnetic induction at the centre due to the current in the ring is

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