Two wires A and B of circular cross-section are made of the same metal and have equal lengths, but the
resistance of wire A is four times greater than that of wire B. Find the ratio of their cross-sectional areas.
Answers
Answered by
1
Answer:
cross section of A : cross section of B = 1:4
Answered by
0
Answer:
1/4
Explanation:
wire of resistance A is 4 time greater than B. By using R=p l/A require pl/Aa=4pl/Ab Then Aa/Ab =1/4
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