"Electrified Coil" PPT courseware

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"Electrified Coil" PPT courseware

Part One: Electromagnet Conjecture

Can the north and south poles of an electromagnet be changed? how to change?

My guess:

Conjecture 1: Change the winding direction of the wire and see if the poles of the electromagnet change.

Conjecture 2: Change the positive and negative poles of the battery and see if there is any change in the poles of the electromagnet.

Electrified coil PPT, part 2: Properties of electromagnets

Properties of electromagnets (2): The north and south poles of the electromagnet can be changed

(1) Depends on the winding direction of the coil

(2) It is related to the connection method of the battery (positive and negative poles)

To change the winding direction of the coil, the north and south poles need to be changed.

Change the connection method of the battery (positive and negative poles), and change the north and south poles.

Experimental results

1. The magnitude of the electromagnet's magnetic force is related to (the strength of the current) and (the number of turns of the coil).

2. The stronger the current, the greater the magnetism of the electromagnet;

The more turns the coil has, the more magnetic the electromagnet is.

Electrified coil PPT, part three: summary

1. The magnetic force of the electromagnet is related to the battery current and the number of coil turns.

When the number of coil turns is the same,

The greater the current, the greater the magnetism; the smaller the current, the less the magnetism.

When the power supply current is the same,

The more turns of the coil, the stronger the magnetic force; the fewer turns of the coil, the smaller the magnetic force.

2. The magnetic pole of the electromagnet is related to the winding direction of the coil and the polarity of the power supply.

If the polarity of the power supply is the same, if the winding direction of the coil changes, the magnetic pole will change.

The coils are wound the same and the magnetic poles change when the polarity of the power source changes.

Electrified Coil PPT, Part 4: Advantages of Electromagnets

What are the advantages of electromagnets compared with ordinary magnets?

1. The presence or absence of the magnetism of the electromagnet can be controlled by turning on or off the current;

2. The magnitude of magnetism can be controlled by the strength of the current or the number of turns of the coil;

3. Its magnetic poles can be controlled by changing the direction of current and coil winding direction.

Electricity can produce magnetism, but can magnetic energy produce electricity?

Electric energy produces magnetism, and magnetism can also produce electricity. When a conductor moves in a magnetic field, a voltage will be generated at both ends of the conductor. The generator uses this principle to make the coil rotate around a center in the magnetic field, thus producing a constantly changing alternating current.

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"Electrified Coil" PPT:

"Electrified Coil" PPT Part One: Making and Researching Electromagnets 1. Understand electromagnets 2. Disassemble electromagnets and explore the mysteries of electromagnets Electromagnets What are electromagnets? 1. Definition: A device that uses electric current to pass through a coil to produce magnetism is called an electromagnet. It consists of..

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Update Time: 2024-11-18

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