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Two wires A and B with circular cross-sections are made of the same metal and have equal lengths, but the resistance of wire A is three times that of resistance B.

What is the ratio of the cross-sectional area of A to that of B. What is the ratio of the radius of A to that of B?

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Uttam Saikia
Uttam SaikiaLv10
17 Nov 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Two wires A and B with circular cross-sections are made of the same metal and have equal lengths, but the resistance of wire A is three times greater than that of wire B.

1. What is the ratio of the cross-sectional area of A to that of B

a. 3

b.  

c. 1

d.  

e. 1/3

2. What is the ratio of the radius of A to that of B? choose from the same possibilities as in part 1.

 

Two wires A and B with circular cross-sections are made of the same metal and have equal lengths, but the resistance of wire A is three times greater than that of wire B. (i) What is the ratio of the cross-sectional area of A to that of B?

(a) 3 (b) √3 (c) 1 (d) 1/√3 (e) 1/3

(ii) What is the ratio of the radius of A to that of B? Choose from the same possibilities as in part (i).

Two wire A and B unith circular cross-section are made of the same metal have equal length but hte resistane of A is three times greater than B.

(a) What is the ratio of cross-sectional area of A to the B.

(b) What is the ratio of radius of A to that of B. 

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