Home
Class 12
PHYSICS
When a wire of uniform cross-section a, ...

When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between any two of diametrically opposite points will be

A

`R/2`

B

`R/4`

C

`R/8`

D

4R

Text Solution

Verified by Experts

The correct Answer is:
B
`1/ R_(eq) = 1/(R/2) + 1/(R/2)
1/R_(eq) = 4/R , R_(ev) = R/4`
Promotional Banner

Similar Questions

Explore conceptually related problems

When a wire of uniform cross-section a , length I and resistance R is bent into a complete circle, resistance between two of diametrically opposite points will be

A wire of resistance 10(Omega) is bent to form a complete circle.Find its resistance between two diametrically opposite points.

A uniform wire os resistance 12 Omega is bent to form a circle. Effective resistance across two diametrically opposite points is

A wire of resistance 16Omega is bent in the form of a circle. What is the effective resistance between diametrically opposite points?

A wire of resistance 12 Omega m^(-1) is bent to from a complete circle of radius 10 cm . The resistance between its two diametrically opposite points, A and B as shown in the figure, is

A uniform metallic wire has a resistance of 18 Omega and is bent into an equiolateral triangle. Then, the resistance between any two vertices of the triangle is :