College Physics
College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 23, Problem 1CQ

How do the multiple-loop coils and iron ring in the version of Faraday's apparatus shown in Figure 23.3 enhance the observation of induced emf?

Chapter 23, Problem 1CQ, How do the multiple-loop coils and iron ring in the version of Faraday's apparatus shown in Figure

Expert Solution & Answer
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To determine

The reason of Multiple −loop coils and iron ring in the version of Faraday's apparatus enhance the observation of induced emf.

Answer to Problem 1CQ

The changing magnetic field an emf is induced and due to this induced emf a current is observed in the coil at the lower end of the ring.

Explanation of Solution

Introduction:

The apparatus used by Faraday to demonstrate that magnetic fields can create currents is as below: -

College Physics, Chapter 23, Problem 1CQ

Coil produce the magnetic field when the switch is closed, the magnetic field produced in the coil is on the upper section of the ring and transfer to the lower part of the ring made up of iron.

The coil present at the upper part is provided with a source of emf and a switch, to achieve the complete circuit it is seen that when we close the switch or open the switch, the rotated coil which is present at the bottom of the ring made up of iron gives a deflection which is observed as the galvanometer reading.

The reading obtained in the galvanometer is the change in magnetic field that is due to the

The emf is produced because of the change in magnetic field which leads to the current flowing in the conductor coil.

Conclusion:

So, due to the changing magnetic field an emf is induced and due to this induced emf a current is observed in the coil at the lower end of the ring.

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Chapter 23 Solutions

College Physics

Ch. 23 - Explain why magnetic damping might not be...Ch. 23 - Explain how electromagnetic induction can be used...Ch. 23 - Using RHR-l, show that the emfs in the sides of...Ch. 23 - The source of a generator’s electrical energy...Ch. 23 - Suppose you find that the belt drive connecting a...Ch. 23 - Explain what causes physical vibrations in...Ch. 23 - Does plastic insulation on live/hot wires prevent...Ch. 23 - Why are ordinary circuit breakers and fuses...Ch. 23 - A GFI may trip just because the live/hot and...Ch. 23 - How would you place two identical flat coils in...Ch. 23 - How would you shape a given length of wire to give...Ch. 23 - €22. Verify, as was concluded without proof in...Ch. 23 - Presbycusis is a hearing loss due to age that...Ch. 23 - Would you use a large inductance or a large...Ch. 23 - High-frequency noise in AC power can damage...Ch. 23 - Does inductance depend on current, frequency, or...Ch. 23 - Explain why the capacitor in Figure 23.55(a) acts...Ch. 23 - If the capacitors in Figure 23.55 are replaced by...Ch. 23 - Does the resonant frequency of an AC circuit...Ch. 23 - Suppose you have a motor with a power factor...Ch. 23 - What is the value of the magnetic flux at coil 2...Ch. 23 - What is the value of the magnetic flux through the...Ch. 23 - Referring to Figure 23.5?(a), what is the...Ch. 23 - Referring to Figure 23.57(b), what is the...Ch. 23 - Referring to Figure 23.58, what are the directions...Ch. 23 - Repeat the previous problem with the battery...Ch. 23 - Verify that the units /t are volts. That is, show...Ch. 23 - Suppose a 50-turn coil lies in the plane of the...Ch. 23 - (a) An MRI technician moves his hand from a region...Ch. 23 - Integrated Concepts Referring to the situation in...Ch. 23 - An emf is induced by rotating a 1000-turn, 20.0 cm...Ch. 23 - A 0.250 m radius, 500-turn coil is rotated...Ch. 23 - Integrated Concepts Approximately how does the emf...Ch. 23 - Integrated Concepts A lightning bolt produces a...Ch. 23 - Use Faraday’s law, Lenz’s law, and RHR—l to show...Ch. 23 - If a current flows in the Satellite Tether shown...Ch. 23 - (a) A jet airplane with a 75.0 m wingspan is...Ch. 23 - (a) A nonferrous screwdriver is being used in a...Ch. 23 - At what speed must the sliding rod in Figure 23.11...Ch. 23 - The 12.0 cm long rod in Figure 23.11 moves at 4.00...Ch. 23 - Prove that when B, l, and v are not mutually...Ch. 23 - In the August 1992 space shuttle flight, only 250...Ch. 23 - Integrated Concepts Derive an expression for the...Ch. 23 - Integrated Concepts The Tethered Satellite in...Ch. 23 - 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