(a) A wire loop is pulled away from a current-carrying wire(Fig. 21–47). What is the direction of the induced currentin the loop: clockwise or counterclockwise?(b) What if the wire loop stays fixed as thecurrent I decreases? Explainyour answers.FIGURE 21-47Question 4.

A) Current will be induced to increase the inward magnetic field, which means that the induced…

Answered: (a) A wire loop is pulled away from a…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 16CQ: In the simple RL circuit of Figure 14.12(b), can the emf induced across the inductor ever be greater...

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Check Your UnderstAnding Verify the directions of the induced cuffents in Figure Figure 133 (a)Qosig the switch of ciicuit 1 produces ashort4ived cuicenz surge in circuit2 (b) If the switch remains closed, no current is observed in cituit 1 (c) Opening the switch again produces a short-lived cuirent in circuit 2 but in the opposite direclion fiom before.
If emf of the battery of Figure 14.12(b) is reduced by a factor of 2, by how much does the steady-state energy stored in the magnetic field of the inductor change?
Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is zero?
Check Your Understanding For the circuit of in Figure 14.12(b), show that when steady state is reached, the difference in the total energies produced by the battery and dissipated in the resistor is equal to the energy stored in the magnetic field of the coil.
Check Your Understanding How much energy is stored in the inductor of Example 14.2 after the current reaches its maximum value?
In the simple RL circuit of Figure 14.12(b), can the emf induced across the inductor ever be greater than the emf of the battery used to produce the current?
Discuss how you might determine the-inductance per unit length of a long, straight wire.
Discuss the factors determining the induced emf in a :losed loop of wire.
Show that the self-inductance per unit length of an infinite, straight, thin wire is infinite.
How would you position a flat loop of wire in a changing magnetic field so that there is no Induced emf in the loop?
In the circuit sho in the accompanying figure, the rtd slides along the conducting rails at a constant VelOCity v. The velocity is in the same plane as the rails and directed at an angle 6 to them. A uniform magnetic field Bis directed out of the page. What is the emf induced in the r?
A square conducting loop is in a region of uniform, constant magnetic field. Can the loop be rotated about an axis along one side and no emf be induced in the loop? Discuss, in terms of the orientation of the rotation axis relative to the magnetic-field direction.

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(a) A wire loop is pulled away from a current-carrying wire (Fig. 21–47). What is the direction of the induced current in the loop: clockwise or counterclockwise? (b) What if the wire loop stays fixed as the current I decreases? Explain your answers. FIGURE 21-47 Question 4.