Astronauts on a space station decide to use Earth's magnetic field to generate electric current. Earth's B field in this region has the magnitude of 3.0 x 10-7 T. They have a coil that rotates 90° in 1.2 s. The area inside the coil measures 5000 m². Estimate the number of loops needed in the coil so that during that 90° turn it produces an average induced emf of about 120 V. Express your answer in turns.

Astronauts on a space station decide to use Earth's magnetic field to generate electric current. Earth's B field in this region has the magnitude of 3.0 x 10-7 T. They have a coil that rotates 90° in 1.2 s. The area inside the coil measures 5000 m². Estimate the number of loops needed in the coil so that during that 90° turn it produces an average induced emf of about 120 V. Express your answer in turns.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter32: Faraday’s Law Of Induction

Section: Chapter Questions

Problem 5PQ

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