Question

a piece of wire of resistance 2 ohm is cut into 4 equal parts. These parts are then connected in parallel. If R denotes the equivalent resistance of the parallel combination then 2 ohm:R=?

Answer 1

r = 2 Ω

r = ρL/A

L = L/4

r1=r2=r3-r4 = 2/4 = 1/2 Ω

1/R = 1/r1 + 1/r2 + 1/r3 + 1/r4

1/R = 2 + 2 + 2 + 2

1/R = 8

R = 1/8 Ω

2: R :: 2:(1/8)

2:R :: 16:1

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Answer 2

Answer:

Above written answer is correct