Physics, asked by vignesh200424, 8 months ago

A wire of given material having length land area of cross-section A
has a resistance of 42. What would be the resistance of another wire
of the same material having length 1/2 and area of cross-section 2A?

Answers

Answered by amanrao520

3

Answer:

R1=42 and given when length /area so length become l/2andarea become 2a so resistance became R2=R1/4

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