FARADAY'S LAW WORKSHEET PHYSICS CM LEC1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniformmagnetic field directed perpendicular to the coil is turned on. If the magnetic fieldchanges linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the inducedemf in the coil while the field is changing?2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of7000 V. The magnitude of the earth's magnetic field at the location of the wire was5.6 x 10 T. What is the orbital speed of the spacecraft?3. A circular loop has a diameter of 25 cm. A uniform magnetic field is normal to the loopand at one instant of time, it is changing at 0.7 T/s. What is the emf induced in theantenna?4. A square coil with 30 turns of wire has a cross section 2.80 cm on each side. Each turnhas the same area and the total resistance of the coil is 0.170 ohms. A uniform magneticfield perpendicular to the plane of the coil is applied. If the field changes uniformly from0.5 T to 1.5 T in 3.1 seconds, what is the induced emf in the coil while the field ischanging?5. An electromagnet produces a 10 mT magnetic field. If the magnetic field magnitudevaries, it changes the flux through a circular loop of wire that has 27 turns. Suppose thatthe loop has a diameter of 5 cm and the induced emf has a magnitude of 20 V. Find thetime required for the magnetic field to decrease to zero from its maximum value.

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1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform magnetic field directed perpendicular to the coil is turned on. If the magnetic field changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced emf in the coil while the field is changing? 2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of 7000 V. The magnitude of the earth's magnetic field at the location of the wire was 5.6 x 10 T. What is the orbital speed of the spacecraft?

1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform magnetic field directed perpendicular to the coil is turned on. If the magnetic field changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced emf in the coil while the field is changing? 2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of 7000 V. The magnitude of the earth's magnetic field at the location of the wire was 5.6 x 10 T. What is the orbital speed of the spacecraft?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 28P: An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's...

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