"Voltage" Voltage Resistance PPT Courseware 4

Description

"Voltage" Voltage Resistance PPT Courseware 4

Voltage

Conditions for the formation of water flow:

1. Water

2. Water height difference (water pressure)

Conditions for the formation of current:

1. Free charge

2. Electrical height difference (voltage)

1. Water flow:

The role of water pressure and the height difference between water (water level difference, water pressure difference): the cause of water flow.

2. Current:

Free charge (positive charge, negative charge)

Electrical height difference (potential difference, voltage difference)

The role of voltage: the cause of current flow.

For there to be current in a circuit, there must be voltage across it

Voltage

Voltage is represented by the letter U SI unit: volt (V)

Commonly used units include:

1 kilovolt (kV) = 1000 volts (V)

1 volt (V) = 1000 millivolts (mV)

1 millivolt (mV) = 1000 microvolts (μV)

The voltage value around you

Several common voltage values:

One dry cell: 1.5V n×1.5V

One battery: 2V n×2V

Household circuit: 220V

Safety voltage: no higher than 36V

Power voltage: 380V

Four things to note when using a voltmeter correctly

1 The voltmeter should be connected in parallel in the circuit

2 The voltmeter has positive and negative terminals

3 The voltmeter has two ranges (0-3V 0-15V)

4 The voltmeter can be directly connected to the power supply

think about it

Correctly use the ammeter and voltmeter to correspond to the four points.

1 connected in series in a circuit connected in parallel in a circuit

2 There are positive and negative terminals. There are positive and negative terminals.

3 There are two measuring ranges There are two measuring ranges

4 Cannot be directly connected to the power supply Can be directly connected to the power supply

Keywords: Voltage and resistance teaching courseware, voltage teaching courseware, New People's Education Edition ninth-grade physics PPT courseware, ninth-grade physics slide courseware download, voltage and resistance PPT courseware download, voltage PPT courseware download, .ppt format

For more information about the "Voltage Voltage Resistance" PPT courseware, please click the Voltage ppt Voltage Resistance ppt tag.

"The Relationship between Current, Voltage and Resistance" PPT courseware:

"The Relationship between Current, Voltage and Resistance" PPT courseware Part 1: Introduction of the topic Please look at the following experiment and think about the problem. Please think: What can be done to dim the light bulb? Method 1: Remove a battery Method 2: Add resistance to the circuit Question: Same...

"The Relationship between Current, Voltage and Resistance" PPT:

"The Relationship between Current, Voltage and Resistance" PPT Part One Content: Thinking: Which physical quantity is most susceptible to the magnitude of the current passing through a certain conductor in a certain circuit, the voltage at both ends of this conductor, and the resistance of this conductor, which physical quantity is most susceptible to the other two Due to changes in quantity...

"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: _____ ..

File Info

Update Time: 2024-09-30

This template belongs to Physics courseware People's Education Edition Ninth Grade Physics Complete Book industry PPT template

Preview