Question

Q.9
What length of a copper wire of cross-sectional
are 0.01 mm?, resistivity 1.7 x 10-8 m, will be
needed to repare a resistance of 1.7 kN2?
(A) 0.1 km
(B) 0.7 km
(C) 1 km
(D) 10 km​

Answer 1

Answer:

(A) 0.1 km

(B) 0.7 km

(C) 1 km

(D) 10 km

B option is the answer

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