"Magical Little Motor" Energy PPT Teaching Courseware

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"Magical Little Motor" Energy PPT Teaching Courseware

Part 1: Importing new lessons

After our four-wheel drive vehicle is powered on, it will start to move. Students, do you know what makes our car move?

Magical little electric motor PPT, part 2: new lesson learning

1. There is a small motor in the electric toy car, which drives the car forward.

2. Apply current to a small motor and observe the direction and speed of its rotation.

3. What’s inside the small electric motor? Why does it rotate when electricity is turned on?

Take a look and think about it

When we see a coil wound around an iron core, we think of an electromagnet. How can we verify our conjecture?

Along what lines does current flow through the coil? What is the function of commutator?

working principle

The purpose of the commutator is to switch on the current and change the direction of the current.

During the rotation of the small motor, the brushes contact the three metal rings of the commutator in sequence, and the direction of the current passing through the rotor coil will automatically change.

The rotation of the small motor is the result of the work of various parts. How are these three parts put together?

The rotation of the rotor must be related to the action of force. How do magnets and electromagnets interact?

1. Install the bracket and circuit.

Place two rubber bands on the inverted cup.

Insert a wire bracket into the rubber ring and install it on the cup.

Wrap the two wires together with tape, separate the ends of one end into a "V" shape, and insert a rubber band into the other end to secure it.

Connect the wires to the battery and switch.

2. Place the rotor

Place the rotor on the stand. Adjust the position of the bracket so that the rotor can turn without sliding down. The "V" shaped fork functions as a brush.

3. Let the small motor rotor rotate.

When current is supplied to the rotor coil, does the rotor rotate? What else needs to be done to make the rotor turn?

Magical little motor PPT, the third part: conclusion summary

1. What did you learn from this lesson?

2. The teacher’s evaluation and summary of the students: An electric motor is a machine that uses electricity to generate power. Although they vary in size and structure, they work on the same basic principle: using electricity to generate magnetism, and using the interaction of magnetism to rotate.

Magical little motor PPT, Part 4: Classroom exercises

(1) Multiple choice questions

1. The rotor is composed of iron core, coil and ( ).

A. Brush B. Commutator C. Shell

2. The rotor is equivalent to ( ) an electromagnet.

A.1 B.3 C.4

3. What can speed up the rotation of the rotor of a small motor is ( ).

A. Use two magnets B. Reduce the number of turns of the coil C. Reduce the number of batteries

(2) Judgment questions

1. There are magnets inside the motor. ( )

2. Changing the current cannot change the speed of the rotor rotation. ( )

3. Electric motors use electricity to work. ( )

Magical little motor PPT, part 5: homework assignments

1. Talk in the group or find out outside class where electric motors are used in life?

2. Interested students can also study what factors affect the speed and direction of the rotor rotation after class.

Keywords: Free download of Chinese PPT courseware for the first volume of the sixth grade in the textbook edition, download of the magical little motor PPT, download of energy PPT, .PPT format;

For more information about the "Energy Magic Little Motor" PPT courseware, please click the Energy PPT Magic Little Motor PPT tab.

"Magic Little Motor" Energy PPT download:

"Magical Little Motor" Energy PPT Download Part One: New Lesson Learning Why is the rotor structured like this? When power is supplied to the coil from the commutator, you can see that the rotor core can pick up the pins, and the rotor is three electromagnets. Guess: along what direction does the current flow...

"Magic Little Motor" Energy PPT:

"Magical Little Motor" Energy PPT Part One: What's inside the small motor? Observe the disassembled small motor. How many parts does it have? What parts are there in each part? When we see a coil wound around an iron core, we think of an electromagnet. How to verify our conjecture...

"Magical Little Motor" Energy PPT Courseware 4:

"Magical Little Motor" Energy PPT Courseware 4 There is a small motor in an electric toy car, which drives the car forward. Apply current to a small motor and observe the direction and speed of its rotation. What's inside a small electric motor? Why does it rotate when electricity is turned on? look..

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Update Time: 2024-11-08

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

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