Question

A uniform wire of resistance 2R is bent in the form of a circle. The effective resistance between the ends of any diameter of the circle is:

1) 2R
2) R
3) R/2
4) R/4​

Answer 1

Answer:

ans should be 3) R/2

Explanation:

a wire of resistance 2R

so when it is bent in the form of circle resistance of upper half is R and that of lower half is also R

so effective resistance between two ends of diameter will be parallel combination of these two

so the answer is R/2

Answer 2

Option "3" is the correct answer to the following question.

Explanation:

Given:

Wire of resistance = 2R

Computation.

If we bent wire, It will two resistors  parallel connected .

Therefore, given resistance between  parallel combination of resistors

are equal and half

so, combination of resistors R/2