Q8: Faraday's LawKEY IDEASThe long solenoid S shown (in cross section) in Fig. 30-3 has220 turns/cm and carries a current i = 1.5 A; its diameter Dis 3.2 cm. At its center we place a 130-turn closely packedcoil C of diameter d 2.1 cm. The current in the solehoid isreduced to zero at a steady rate in 25 ms. What is the magni-tude of the emf that is induced in coil C while the current inthe solenoid is changing?1. Because it is located in the interior of the solenoid, coil Clies within the magnetic field produced by current i in thesolenoid; thus, there is a magnetic flux d, through coil C.2. Because current i decreases, flux also decreases.3. As d decreases, emf E is induced in coil C.4. The flux through each turn of coil C depends on the areaA and orientation of that turn in the solenoid's magneticfield B.Because B is uniform and directed perpendicularto area A, the flux is given by Eq. 30-2 (4 = BA).5. The magnitude B of the magnetic field in the interior ofa solenoid depends on the solenoid's current i and itsnumber n of turns per unit length, according to Eq. 29-23(B = Pin).AxisFigure A coil Cis located inside a solenoid S, which carriesent i.

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KEY IDEAS The long solenoid S shown (in cross section) in Fig. 30-3 has 220 turns/cm and carries a current i 1.5 A; its diameter D is 3.2 cm. At its center we place a 130-turn closely packed coil C of diameter d 2.1 cm. The current in the solehoid is reduced to zero at a steady rate in 25 ms. What is the magni- tude of the emf that is induced in coil C while the current in the solenoid is changing? 1. Because it is located in the interior of the solenoid, coil C lies within the magnetic field produced by current i in the solenoid; thus, there is a magnetic flux , through coil C. 2. Because current i decreases, flux , also decreases, 3. As Pn decreases, emf & is induced in coil C. 4. The flux through each turn of coil C depends on the area A and orientation of that turn in the solenoid's magnetic field B.Because B is uniform and directed perpendicular to area A, the flux is given by Eq. 30-2 ( BA). 5. The magnitude B of the magnetic field in the interior of a solenoid depends on the solenoid's current i and its number n of turns per unit length, according to Eq. 29-23 (B=Hin). 20000 Axis Figure A coil Cis located inside a solenoid S, which carries current i.

KEY IDEAS The long solenoid S shown (in cross section) in Fig. 30-3 has 220 turns/cm and carries a current i 1.5 A; its diameter D is 3.2 cm. At its center we place a 130-turn closely packed coil C of diameter d 2.1 cm. The current in the solehoid is reduced to zero at a steady rate in 25 ms. What is the magni- tude of the emf that is induced in coil C while the current in the solenoid is changing? 1. Because it is located in the interior of the solenoid, coil C lies within the magnetic field produced by current i in the solenoid; thus, there is a magnetic flux , through coil C. 2. Because current i decreases, flux , also decreases, 3. As Pn decreases, emf & is induced in coil C. 4. The flux through each turn of coil C depends on the area A and orientation of that turn in the solenoid's magnetic field B.Because B is uniform and directed perpendicular to area A, the flux is given by Eq. 30-2 ( BA). 5. The magnitude B of the magnetic field in the interior of a solenoid depends on the solenoid's current i and its number n of turns per unit length, according to Eq. 29-23 (B=Hin). 20000 Axis Figure A coil Cis located inside a solenoid S, which carries current i.

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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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

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Q8: Faraday's Law
KEY IDEAS
The long solenoid S shown (in cross section) in Fig. 30-3 has
220 turns/cm and carries a current i = 1.5 A; its diameter D
is 3.2 cm. At its center we place a 130-turn closely packed
coil C of diameter d 2.1 cm. The current in the solehoid is
reduced to zero at a steady rate in 25 ms. What is the magni-
tude of the emf that is induced in coil C while the current in
the solenoid is changing?
1. Because it is located in the interior of the solenoid, coil C
lies within the magnetic field produced by current i in the
solenoid; thus, there is a magnetic flux d, through coil C.
2. Because current i decreases, flux also decreases.
3. As d decreases, emf E is induced in coil C.
4. The flux through each turn of coil C depends on the area
A and orientation of that turn in the solenoid's magnetic
field B.Because B is uniform and directed perpendicular
to area A, the flux is given by Eq. 30-2 (4 = BA).
5. The magnitude B of the magnetic field in the interior of
a solenoid depends on the solenoid's current i and its
number n of turns per unit length, according to Eq. 29-23
(B = Pin).
Axis
Figure A coil Cis located inside a solenoid S, which carries
ent i.

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