"Electromagnet" energy PPT teaching courseware

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"Electromagnet" energy PPT teaching courseware

Part 1: Importing new lessons

Can this long iron nail be turned into a tool that attracts iron like a magnet? What can you do? The teacher can turn it into a magnet, do you believe it?

Electromagnet PPT, part 2 content: new lesson learning

What happens to the compass when the energized coil is brought close to it? What does it mean?

If you wrap a coil around a large iron nail, will the iron nail become magnetized?

Wrap a coil around the iron nail.

Use an insulated wire to wrap 50 to 100 times in one direction around a large iron nail, leaving 10 cm to 15 cm at both ends of the wire as lead wires. Secure both ends of the wire to prevent it from loosening. Polish the wire ends with sandpaper.

What is an electromagnet?

1.Definition: An electromagnet is a solenoid with an iron core.

2.Construction:

Electromagnet PPT, part three: conclusion summary

1. Electromagnets have the basic property of producing magnetism when current is turned on and disappearing when current is turned off.

2. Changing the positive and negative pole connections of the battery or changing the direction of the coil winding will change the north and south poles of the electromagnet.

(Both methods change the direction of the current in the coil).

Electromagnet PPT, Part 4: Classroom Exercises

(1) Multiple choice questions

1. An electromagnet can also be made by winding a coil on ( ).

A. wooden stick B. copper rod C. porcelain bottle

2. After the power is turned off, the electromagnet ( ) attracts the pin.

A. Can B. Can't C. Unable to determine

(2) Judgment questions

1. Both electromagnets and magnets have north and south poles. ( )

2. Wrap the wire around a large iron nail in a certain direction to create an electromagnet. ( )

3. The properties of electromagnets and magnets are exactly the same, there is no difference. ( )

Electromagnet PPT, Part 5: Homework Arrangement

What are the differences between the properties of magnets and electromagnets?

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Update Time: 2024-11-10

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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