Spike left his car headlights on overnight and the battery has gone flat. Carly suggests that rather than using her car to recharge the battery they instead build a battery charger so he can do it himself. She suggests that he modify an old transformer that they don't need anymore to do the job. The old transformer has a primary coil of 309 turns. It will need to be connected to mains voltage (240 V) and put out a voltage of 11 V to charge the car battery. How many turns should Spike wind to make the secondary coil? (No decimals, no units)

Spike left his car headlights on overnight and the battery has gone flat. Carly suggests that rather than using her car to recharge the battery they instead build a battery charger so he can do it himself. She suggests that he modify an old transformer that they don't need anymore to do the job. The old transformer has a primary coil of 309 turns. It will need to be connected to mains voltage (240 V) and put out a voltage of 11 V to charge the car battery. How many turns should Spike wind to make the secondary coil? (No decimals, no units)

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 5STP

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