Question

1. A piece of wire of resistance Ris cut into five equal parts. These parts are then
connected in parallel. If the equivalent resistance of this combination is R. then the
ratio R/R'is -
1/25
(b) 1/5
(c) 5
(d) 25
in a circuit?​

Answer 1

Answer:

Wire is cut into 5 equal parts. Since all dimensions are same for pieces, Resistance of each wire is equal and has a value = R/5. Resistance is proportional to length of wire and inversely proportional to area of cross-section. IF length is 1/5th, then Resistance is also 1/5 th of original value.

Explanation:

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Answer 2

see the figure in attachment.