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13. Resistance of a 50 cm long and 0.2 mm diameter wire is
0.822. Resistance of another wire of different material of
75 cm length and 0.1 mm diameter is 1.512. Compare the
- 2*specific resistance of the materials.
Answers
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Answer:
(rho)/(rho)' = 4.932/1.512
- Explanation:
R=(rho)L/A ..........(i)
R'=(rho)'L'/A'...........(ii)
divide (i)/(ii) and calculate ration of (rho)/(rho)' [A=(pi)d^2 / 4 ]
akhileshchaudhary682:
bhai answer 16:5 hai
this is right . the ratio of your and mine ans is 3.2 .your book had just converted into nearest whole number. process is correct buddy
thanks your method is correct
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