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Q. A 200 km long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1050 A. If the conductor is copper with a free charge density of 8.8 x10^28 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable.

Q. A length of wire is cut into 4 equal pieces. If each piece has a resistance of 0.31 , what is the resistance of the original length of wire?

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  • Category:- Physics
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