A circular coil of single turn has a resistance of 20 ohm Which one of the following is the correct ...........

General Science (NDA) Physics

A circular coil of single turn has a resistance of 20 ohm. Which one of the following is the correct value for the resistance between the ends of any diameter of the coil?

5 ohm

10 ohm

20 ohm

40 ohm

Explanation:

The resistance of single turn of coil is 20 W The resistance of half semicircle ACB and ADB will be 10 W each.
Diagonally they are in parallel so equivalent resistance