Question: A cylindrical copper cable 1.50 km long is connected across a 220.0-V potential difference. (a) What should be its diameter so that it produces beat

A cylindrical copper cable 1.50 km long is connected across a 220.0-V potential difference.
(a) What should be its diameter so that it produces beat at a rate of 50.0 W?
(b) What is the electric field inside the cable under these conditions?

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