Question

n 12. P and Q are two points on a uniform ring of resistance R. O is the centre of the ring. If the part PQ of the ring subtends an angle 0 at the centre 0 of the ring (i.e. Z POQ = 0), the equivalent resistance of the ring between the points P and Q will be ... [radius of the ring = r and resistance per unit length of the ring = R] RO ө RᎾ (a) (21 - 0) (6) R/1- (c) 4R² 2 TT 2T 4T = ) R(1) (d) R R(2,70​

Answer 1

Answer:

Answer in attachments.

Explanation:

Both resistances are in parallel since they are connected to same potential.

Assume that the resistance per unit length is constant.

Sorry but I took total Resistance as R.

So answer according to your question is R(2πr)/2π

= Rr (ans)