"Lighting Up the Little Light Bulb" Electric PPT Courseware 2

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"Lighting Up the Little Light Bulb" Electric PPT Courseware 2

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For charges to flow to form an electric current, two conditions need to be met:

One is the power supply;

The second is the circuit;

Observe the structure of wires and batteries

The wire consists of a metal inner core and a plastic outer sheath

Metal is conductive and plastic is insulating.

Battery: One end is a copper cap, called the positive electrode; the other end is a zinc shell, called the negative electrode.

short circuit

A short circuit occurs when the positive and negative terminals of a battery are directly connected by wires.

When there is a short circuit, the battery and wires will become hot in an instant. Not only will the small bulb not be able to emit light, but the battery will also be damaged quickly.

Similarities and differences between short circuit and open circuit

Difference 1:

A short circuit means that the positive and negative poles are directly connected to form a circuit, and current flows through it. An open circuit means that the line between the positive and negative poles is disconnected, and no current flows through it.

Difference 2: A short circuit will cause the system to burn down, while an open circuit will only cause the system to be temporarily unusable.

Same point:

In the end, the system cannot work, the power consumed by the system is zero, and the resistance is approximately considered to be 0.

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"Light up the little light bulb" electronic PPT download:

"Lighting Up the Little Light Bulb" Electricity PPT Download Part One Content: New Knowledge Explanation Activities Connecting simple circuits Activity equipment Wires, batteries, small light bulbs Activity requirements Each student must assemble the circuit by hand and observe the connection device of the small light bulb. Look inside the small light bulb...

"Light up the little light bulb" electric PPT:

"Lighting up the small light bulb" Electricity PPT Part 1: The structure of the small light bulb Observe the structure of the small light bulb, guess how the current flows, and try to draw the path of the current. Observe the structure of the small light bulb and guess how the current flows. Try to draw the path of the current...

"Lighting up the little light bulb" electronic PPT courseware 3:

"Lighting Up the Little Light Bulb" Electric PPT Courseware 3 How to make a small light bulb shine? Two conditions are needed to allow the charge to flow to form a current: one is the power supply; the other is the circuit; the flow route of electricity in the small light bulb. The electricity in the battery flows out from the positive electrode, from a metal part of the small light bulb...

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Update Time: 2024-06-28

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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