Science, asked by itsparasgangwar, 7 months ago

resistavity of iron wire 20×10⁶ohm cm and its cross -sectional area is 0.9cm² . if its resistance is 118ohm, then find out the length of wire .

Answers

Answered by ramandhamija

1

Explanation:

given, R= 118 ohm

p= 20× 10^6 ohm CM

A= 0.9 cm2

By applying formula

p= RA/l

l= RA/p

solve it and u will get the answer

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