Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Question
Chapter 7, Problem 36R
To determine
To Label: The parts of the device in the diagram and explain the function of each.
Expert Solution & Answer
Explanation of Solution
A simple electric motor is shown in the question.
The function of each part of the motor is as follows:
- Permanent magnet Function:the permanent magnet provides the magnetic field due to which the magnetic force between the coil and the magnet makes the coil rotate, if there is current in the coil.
- Brushes Function: the brushes in an electric motor work as
- Commutator Function: the commutator is a split conducting metal ring. Along with the brushes, it forms a closed circuit between the battery and the coil. When it is in contact with the brushes, current flows through the coil.
- Battery Function: the battery produces the required voltage difference across the device due to which current flows in the coil.
- Coil Function: the coil acts as an
The commutator also reverses the direction of current in the coil by rotating in such a way that its halves connected to the positive and negative terminal of the battery are switched. This results in flipping of the polarity of the magnetic field around the coil.
Conclusion: The electric motor transforms electric energy into mechanical energy due to the operation of each part.
Chapter 7 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Ch. 7.1 - Prob. 1RCh. 7.1 - Prob. 2RCh. 7.1 - Prob. 3RCh. 7.1 - Prob. 4RCh. 7.1 - Prob. 5RCh. 7.1 - Prob. 6RCh. 7.1 - Prob. 7RCh. 7.2 - Prob. 8RCh. 7.2 - Prob. 9RCh. 7.2 - Prob. 10R
Ch. 7.2 - Prob. 11RCh. 7.2 - Prob. 12RCh. 7.2 - Prob. 13RCh. 7.2 - Prob. 14RCh. 7.3 - Prob. 15PPCh. 7.3 - Prob. 16PPCh. 7.3 - Prob. 17PPCh. 7.3 - Prob. 18RCh. 7.3 - Prob. 19RCh. 7.3 - Prob. 20RCh. 7.3 - Prob. 21RCh. 7.3 - Prob. 22RCh. 7.3 - Prob. 23RCh. 7 - Prob. 24RCh. 7 - Prob. 25RCh. 7 - Prob. 26RCh. 7 - Prob. 27RCh. 7 - Prob. 28RCh. 7 - Prob. 29RCh. 7 - Prob. 30RCh. 7 - Prob. 31RCh. 7 - Prob. 32RCh. 7 - Prob. 33RCh. 7 - Prob. 34RCh. 7 - Prob. 35RCh. 7 - Prob. 36RCh. 7 - Prob. 37RCh. 7 - Prob. 38RCh. 7 - Prob. 39RCh. 7 - Prob. 40RCh. 7 - Prob. 41RCh. 7 - Prob. 42RCh. 7 - Prob. 43RCh. 7 - Prob. 44RCh. 7 - Prob. 45RCh. 7 - Prob. 46RCh. 7 - Prob. 47RCh. 7 - Prob. 48RCh. 7 - Prob. 49RCh. 7 - Prob. 1STPCh. 7 - Prob. 2STPCh. 7 - Prob. 3STPCh. 7 - Prob. 4STPCh. 7 - Prob. 5STPCh. 7 - Prob. 6STPCh. 7 - Prob. 7STPCh. 7 - Prob. 8STPCh. 7 - Prob. 9STPCh. 7 - Prob. 10STPCh. 7 - Prob. 11STPCh. 7 - Prob. 12STPCh. 7 - Prob. 13STPCh. 7 - Prob. 14STPCh. 7 - Prob. 15STP
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