You are evaluating the performance of a large electromagnet. The magnetic field of the electromagnet is zero at t = 0 and increases as the current through the windings of the electromagnet is increased. You determine the magnetic field as a function of time by measuring the time dependence of the current induced in a small coil that you insert between the poles of the electromagnet, with the plane of the coil parallel to the pole faces as for the loop in (Figure 1). The coil has 4 turns, a radius of 0.700 cm, and a resistance of 0.190 . You measure the current i in the coil as a function of time t. Your results are shown in (Figure 2). Throughout your measurements, the current induced in the coil remains in the same direction. igure < 1 of 2 S N Part A Calculate the magnetic field at the location of the coil for t = 2.00 s. Express your answer to three significant figures and include the appropriate units. O F μA 3 ? Units Request Answer Part B Calculate the magnetic field at the location of the coil for t = 5.00 s. Express your answer to three significant figures and include the appropriate units. " μA Value Units B= Submit B= Value Constants.

You are evaluating the performance of a large electromagnet. The magnetic field of the electromagnet is zero at t = 0 and increases as the current through the windings of the electromagnet is increased. You determine the magnetic field as a function of time by measuring the time dependence of the current induced in a small coil that you insert between the poles of the electromagnet, with the plane of the coil parallel to the pole faces as for the loop in (Figure 1). The coil has 4 turns, a radius of 0.700 cm, and a resistance of 0.190 . You measure the current i in the coil as a function of time t. Your results are shown in (Figure 2). Throughout your measurements, the current induced in the coil remains in the same direction. igure < 1 of 2 S N Part A Calculate the magnetic field at the location of the coil for t = 2.00 s. Express your answer to three significant figures and include the appropriate units. O F μA 3 ? Units Request Answer Part B Calculate the magnetic field at the location of the coil for t = 5.00 s. Express your answer to three significant figures and include the appropriate units. " μA Value Units B= Submit B= Value Constants.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 75AP: A reasonably uniform magnetic field over a limited region of space can be produced with the...

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