1. A city of 30, 000 people receives 1.25 kW per person from a pair of transmission lines across which a 120 kV potential difference exists. The voltage is stepped down to 120 V at a transformer. Calculate: A. the current in the primary coil. B. the ratio of the number of turns in the primary coil to the number of turns in the secondary coil. C. How much current would have to flow if the power is transmitted at 120 V instead of 120,000 V?

1. A city of 30, 000 people receives 1.25 kW per person from a pair of transmission lines across which a 120 kV potential difference exists. The voltage is stepped down to 120 V at a transformer. Calculate: A. the current in the primary coil. B. the ratio of the number of turns in the primary coil to the number of turns in the secondary coil. C. How much current would have to flow if the power is transmitted at 120 V instead of 120,000 V?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 27P: . The generator at a large power plant has an output of 1,000,000 kW at 24,000 V. (a) If it were a...

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