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What length of the wire of specific resi...

What length of the wire of specific resistance `48 xx 10^- 8Omegam` in needed to make a resistance of `4.2 Omega` (diameter of wire = 0.4 mm)

A

4.1 m

B

3.1 m

C

2.1 m

D

1.1 m

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SARAS PUBLICATION-MODEL QUESTION PAPER 1-EXERCISE
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