4. (a 5) Power stations are normally far away from the customers. A transformer is often used to increase the voltage to a high value. Why do we use the high voltage to transmit the electricity? (b5) For an ideal transformer, if the number of turns in the primary coil is 3000 and the voltage is 45 kV, to get 120 V from the secondary coil, how many turns should the secondary coil have?

4. (a 5) Power stations are normally far away from the customers. A transformer is often used to increase the voltage to a high value. Why do we use the high voltage to transmit the electricity? (b5) For an ideal transformer, if the number of turns in the primary coil is 3000 and the voltage is 45 kV, to get 120 V from the secondary coil, how many turns should the secondary coil have?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter8: Electromagnetism And Em Waves

Section: Chapter Questions

Problem 7C

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