Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 9, Problem 1RQ
To what is the turning force of a d’Arsonval meter movement proportional?
Expert Solution & Answer
To determine
The quantity to which the turning force of a d’Arsonval meter movement proportional to?
Answer to Problem 1RQ
The turning force of a d’Arsonval meter movement is proportional to the strength of the magnetic field developed in the current carrying coil.
Explanation of Solution
Description:
The underlying principle behind operation of the d’Arsonval meter movementis that like magnetic poles repel each other. The turning force of depends on the repulsion of magnetic fields. A magnetic field is created around the coilas current passes through it.
The flow of current is such that the polarity of the permanent magnet and that of the magnetic pole created around the coil is the same. As like magnetic poles repel each other, the coil is deflected away from the pole of the magnet. A spring provides the damping movement to the turning of the coil. The turning distance against the spring is proportional to the strength of the magnetic field developed in the current carrying coil.
Conclusion:
The quantity on which the turning force of a d’Arsonval meter movement is dependant has been explained.
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Chapter 9 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 9 - To what is the turning force of a dArsonval meter...Ch. 9 - Prob. 2RQCh. 9 - A DC voltmeter has a resistance of 20,000 per...Ch. 9 - 4. What is the purpose of an ammeter shunt?
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Ch. 9 - 7. How is a voltmeter connected into a circuit?
Ch. 9 - 8. An ammeter shunt has a voltage drop of 50 mV...Ch. 9 - 9. What type of meter contains its own separate...Ch. 9 - 10. What electrical quantity does the oscilloscope...
Ch. 9 - 11. What is measured on the Y axis of an...Ch. 9 - 12. What is measured on the X axis of an...Ch. 9 - 13. A waveform shown on the display of an...Ch. 9 - 14. What is the major difference between a...Ch. 9 - 15. What two factors determine the turning force...Ch. 9 - You are an electrician on the job. You have been...Ch. 9 - 1. A d'Arsonval meter movement has a full-scale...Ch. 9 - 2. The meter movement described in Question 1 is...Ch. 9 - 3. A meter movement has a full-scale value of . A...Ch. 9 - 4. The meter movement in Question 3 is to be used...Ch. 9 - 5. A digital voltmeter indicates a voltage of 2.5...
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