"What is Electric Energy Converted into?" PPT courseware

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"What is Electric Energy Converted into?" PPT courseware

1. Electric light

When electric current passes through the lamp, the electrical energy is converted into heat energy (internal energy) and light energy.

2. Electric heater

When electric current passes through the electric heater, the electrical energy is converted into thermal energy (internal energy).

conversion of electrical energy

When electric current passes through the electrolyzer, electrical energy is converted into chemical energy.

conversion of electrical energy

Electric energy

Electric light──heat, light energy

Electric fan─kinetic energy

Television─Light and sound energy

Washing machine─kinetic energy

Electric furnace──heat energy

Computer─Light and sound energy

Refrigerator──"cold energy"

The essence of electrical appliances: converting electrical energy into other forms of energy

On-site training:

1. Among the following electrical equipment, which rely on the conversion of electrical energy into heat energy: ( )

A. Electric motor B. Rice cooker

C. Electric fan D. TV

2. Point out the following energy conversion process

1. Generator generates electricity and converts other forms of energy into electrical energy

2. Electric motor converts electrical energy into kinetic energy

3. Electric fan converts electrical energy into kinetic energy

4. Rice cooker converts electrical energy into heat energy (internal energy)

5. Dry batteries and storage batteries supply power to the outside world and convert chemical energy into electrical energy.

Understand the electric energy meter:

counter

Electric meter panel

Indicates that this electric energy meter should be used in a 220V circuit, the calibrated current is 5A, and the current does not exceed 30A in a short period of time.

Kilowatt hour, a unit of electrical energy

It means that for every 1 kilowatt hour of electricity consumed, the turntable on the energy meter rotates 600 times.

textbook:

220V: This energy meter should be used in a 220 volt circuit.

10 (20) A: Its calibrated current is 10 A. In short-term applications, the current is allowed to be larger, but it cannot exceed 20 A.

50 Hz: This energy meter is used on a 50 Hz AC circuit.

600Revs/kwh: For every 1 kilowatt hour of electricity consumed, the turntable on the energy meter rotates 600 times.

Electric energy calculation:

The number displayed on Xiaoqiang’s electric energy meter at the beginning of this month is ________. The electricity consumption shown on the electricity bill receipt at the end of the month is 30kw·h. Then the number displayed on the electric energy meter at the end of the month should be ____________. The electricity consumed this month is _________kWh. Combined with ________J, if 1 kilowatt hour of electricity is 0.60 yuan, then Xiaoqiang’s family should pay _________ yuan for the electricity bill.

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Update Time: 2024-11-19

This template belongs to science courseware E-education edition third grade science volume 2 industry PPT template

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