"Measurement of Voltage" PPT courseware

Description

"Measurement of Voltage" PPT courseware

Part One Content: Classroom Experiment

Experiment: Connect the circuit with wires as shown in the circuit diagram.

[Demonstration] The light bulb lights up, indicating that current is generated in the circuit.

think

1. How is electric current formed?

2. If there is no dry battery, will the light bulb still light up when the switch is closed? Why?

discuss

Why can't current flow in the circuit in this case? What is the function of power supply?

Voltage measurement PPT, Part 2: Voltage

1. Voltage is the cause of current.

2. The power supply is a device that provides voltage.

3. Voltage symbol: U

4. International unit: volt, referred to as volt (V).

Commonly used units: kilovolts (kV), millivolts (mV), microvolts (μV), etc.

1 kilovolt = 1000 volts

1 volt = 1000 millivolts

1 millivolt = 1000 microvolts

Voltage measurement PPT, Part 3: Voltage measurement

1. Symbol of voltmeter: -V -

How to use a voltmeter

1. in parallel

2. Current "+" goes in, "-" goes out

3. Do not exceed the measuring range.

Voltage measurement PPT, part 4 content: exercises:

1. Fill in the appropriate letters in the circles A and B of each circuit diagram in Figure 4-42 to represent different electricity meters, and mark the positive and negative terminals in the diagram.

2. Connect the circuit components in Figure 4-43 to form a circuit. It is required that the two light bulbs are connected in series, the voltmeter can measure the voltage of lamp L1, and the ammeter can measure the current of lamp L2.

3. Determine what voltage the voltmeter in the following three pictures measures?

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, voltage measurement PPT download, .PPT format;

For more information about the "Measurement of Voltage" PPT courseware, please click the "Measurement of Voltage ppt" tab.

"Measurement of Voltage" PPT courseware download:

"Measurement of Voltage" PPT courseware download Part 1: Voltage 1. Voltage causes the free charges in the circuit to move directionally to form a current. 2. The power supply is a device that provides voltage. 3. The symbol for voltage: _____. 4. The main international unit of voltage: _____ ..

"Measurement of Voltage" PPT download:

"Measurement of Voltage" PPT download Part 1: Review: 1. What is the reason why metal conductors conduct electricity easily? There are a lot of free charges in a conductor. 2. After the metal conductor is connected to the circuit to form a path, why is there current in the circuit? It's the freedom in the wire...

"Measurement of Voltage" PPT:

"Measurement of Voltage" PPT Part 1 Content: Experimental Exploration When the switch is closed, does the ammeter read? How do free electrons move when the power is not connected? Will there be current? When there is no power supply in the circuit, these charges cannot produce directional displacement...

File Info

Update Time: 2024-11-22

This template belongs to science courseware Zhejiang Education Edition Eighth Grade Science Volume 1 industry PPT template

Preview