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A battery is connected between two point...

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

A

proportional to 2 `(180^@ - theta)`

B

Inversely proportional to `tau`

C

zero only if `theta = 180^@`

D

zero for all values of ` theta`

Text Solution

Verified by Experts

The correct Answer is:
D
`B = (mu_i theta)/(4pi r)`
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NARAYNA-MOVING CHARGES AND MAGNETISM-EXERCISE - 1(C.W) (AMPERE.S CIRCUITAL LAW BIOT-SAVART LAW AND ITS APPLICATIONS)
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