Question

A wire of resistance ten ohm is in shape of a circle. Calculate the resistance between the two ends of the diameter

Answer 1

Answer:

when we bend the 10 ohm resistance wire into a circle the length of each branches in parallel is half of that of the original wire .

we get resistance of each branch to be 5 ohms

resistance between the two ends of the diameter

1/R = 1/R1 + 1 /R

1/R = 1/5 + 1/ 5

1/R = 2/5

R = 5/2

R = 2.5 Ohm

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