Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
Chapter 37, Problem 6A
How does the frequency of a changing magnetic field compare with the frequency of the alternating voltage that is induced?
Expert Solution & Answer
To determine
To Explain: Frequency of changing magnetic field and frequency of alternating voltage that is induced.
Answer to Problem 6A
Both, frequency of changing magnetic field and frequency of alternating voltage that is induced will be the same.
Explanation of Solution
Introduction: The number of wavelengths that pass a point in given time period is termed as frequency. Its categories in two parts; low frequency and high frequency.
When the magnetic field strength diminishes (as magnet leaves), voltage will be induced in an opposite direction. So, the frequency of alternating voltage that is induced will be equivalent to frequency of changing magnetic field (in the loop).
Conclusion: Frequencies of changing magnetic field as well as alternating voltage that is induced will be similar.
Chapter 37 Solutions
Conceptual Physics: The High School Physics Program
Ch. 37 - What did Michael Faraday and Joseph Henry...Ch. 37 - How can voltage be induced in a wire with the help...Ch. 37 - A magnet moved into a coil of wire will induce...Ch. 37 - Why is it more difficult to move a magnet into a...Ch. 37 - Current, as well as voltage, can be induced in a...Ch. 37 - How does the frequency of a changing magnetic...Ch. 37 - What is a generator, and how does it differ from a...Ch. 37 - Why is the voltage induced in an alternator AC...Ch. 37 - The armature of a generator must rotate in order...Ch. 37 - A motor is characterized by three main...
Ch. 37 - What does a transformer actually...Ch. 37 - What does a step-up transformer step up—voltage,...Ch. 37 - How does the relative number of turns on the...Ch. 37 - If the number of secondary turns is 10 times the...Ch. 37 - Prob. 15ACh. 37 - Why is it advantageous to transmit electric power...Ch. 37 - What fundamental quantity underlies the concepts...Ch. 37 - Distinguish between Faradays law expressed in...Ch. 37 - How do the wave speeds compare for high-frequency...Ch. 37 - Prob. 20ACh. 37 - The magnets are moved into the wire coils in...Ch. 37 - The transformers are all powered with 100 W, and...Ch. 37 - When Tim pushes the wire down between the poles of...Ch. 37 - A common pickup for an electric guitar consists of...Ch. 37 - Two separate but similar coils of wire are mounted...Ch. 37 - If you place a metal ring in a region in where a...Ch. 37 - A magician places an aluminum ring on a table,...Ch. 37 - How could you light a lightbulb that is near, yet...Ch. 37 - What is the basic difference between an electric...Ch. 37 - With no magnets around, why will current flow in a...Ch. 37 - What is the source of all electromagnetic waves?Ch. 37 - Why is a generator armature more difficult to...Ch. 37 - Your classmate says that, if you crank the shaft...Ch. 37 - Some bicycles have electric generators that are...Ch. 37 - An electric hair drier running at normal speed...Ch. 37 - When a piece of plastic tape coated with iron...Ch. 37 - Why is it important that the core of a transformer...Ch. 37 - Why can a hum often be heard when a transformer is...Ch. 37 - When a strip of magnetic material, variably...Ch. 37 - If a car made of iron and steel moves over a wide...Ch. 37 - Prob. 41ACh. 37 - How could you move a conducting loop of wire...Ch. 37 - Why does a transformer require alternating...Ch. 37 - How does the current in the secondary of a...Ch. 37 - In what sense can a transformer be thought of as...Ch. 37 - Can an efficient transformer step up energy?...Ch. 37 - A friend says that changing electric and magnetic...Ch. 37 - Would electromagnetic waves exist if changing...Ch. 37 - When a bar magnet is dropped through a vertical...Ch. 37 - What is wrong with this scheme? To generate...Ch. 37 - An electromagnet A with a coil of 10 turns...Ch. 37 - An electric doorbell requires 12 volts to operate...Ch. 37 - A model electric train requires 6 V to operate....Ch. 37 - If the output current for the above transformer is...Ch. 37 - A transformer has an input of 9 volts and an...Ch. 37 - A model electric train requires a low voltage to...Ch. 37 - Prob. 57ACh. 37 - Prob. 58ACh. 37 - Neon signs require about 12,000 V for their...
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