Why electromagnet is used in commercial electric motor?1 mark it's urgent
Answers
Answer:
It enhances the power of motor. Thus, commercial electric motors do not use permanent magnet to rotate the armature because permanent magnets are weak and do not produce strong magnetic field in the region.
Explanation:
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Answer:
Interactive graphic of motor
Interactive graphic of motor
Picture 2. A simple electric motor. Use the highlighted words in the text to find out how it works.
How does it work?
The motor is connected to a battery. When the switch is closed, the current starts to flow and the coil becomes an electromagnet. In this case the current is flowing anticlockwise in the top of the coil. This makes the top a north pole. This north pole is attracted to the south pole on the left. So the top of the coil turns towards the left. Notice that the bottom of the coil is a south pole and is attracted to the magnet on the right.