A magnet is below a Coil, as shown(STT 25.2). Referring to Figure 25.13for guidance, what is the direction of the induced current in the coil if■ The magnet is moving toward the coil?■ The magnet is held stationary near the coil?■ The magnet is moving away from the coil?A. Clockwise. B. Counterclockwise.C. There is no induced current. Current meterNS KEY CONCEPTFIGURE 25.13 The induced current depends on the motion of the magnet.(a) Magnet at rest(b) Magnet moving down(c) Magnet moving up1. The magnetSSis moving upward.1. Moving themagnet downwardincreases theS2. Downward fluxCurrent meterCurrent meteris decreasing.Current meterdownward fluxthrough the coil.BmagnetNBmagnetInducedInducedcurrentcurrentBinducedBinduced1. The magnet2. There is nochange in flux,so there is no3. A counterclockwise2. The loop needsto generate anupward-pointingfield to opposethe change.4. A downward-pointing field isinduced by aclockwise current.3. A downward-pointing field isneeded to opposethe change.at rest creates acurrent is needed toflux downwardinduce theupward-pointingmagnetic field.through the coil.current.********

If the magnet is moving towards the coil, the intensity of the magnetic field will increase.…

Answered: Current meter N S KEY CONCEPT FIGURE…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

A magnet is below a Coil, as shown(STT 25.2). Referring to Figure 25.13
for guidance, what is the direction of the induced current in the coil if
■ The magnet is moving toward the coil?
■ The magnet is held stationary near the coil?
■ The magnet is moving away from the coil?
A. Clockwise. B. Counterclockwise.
C. There is no induced current.

KEY CONCEPT
FIGURE 25.13 The induced current depends on the motion of the magnet.
(a) Magnet at rest
(b) Magnet moving down
(c) Magnet moving up
1. The magnet
S
S
is moving upward.
1. Moving the
magnet downward
increases the
S
2. Downward flux
Current meter
Current meter
is decreasing.
Current meter
downward flux
through the coil.
Bmagnet
N
Bmagnet
Induced
Induced
current
current
Binduced
Binduced
1. The magnet
2. There is no
change in flux,
so there is no
3. A counterclockwise
2. The loop needs
to generate an
upward-pointing
field to oppose
the change.
4. A downward-
pointing field is
induced by a
clockwise current.
3. A downward-
pointing field is
needed to oppose
the change.
at rest creates a
current is needed to
flux downward
induce the
upward-pointing
magnetic field.
through the coil.
current.
********

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