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 isA. Proportional to `2(180^(@)-theta)`B. Inversely proportinal to `r`C. Zero, only if `theta=180^(@)`D. Zero for all values of `theta`

A battery is connected between two points `A and B` on the circumferen

1.	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 isA. Proportional to `2(180^(@)-theta)`B. Inversely proportinal to `r`C. Zero, only if `theta=180^(@)`D. Zero for all values of `theta`
Answer» Correct Answer - D

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