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Authoritative PPT Summary
"The circuit is out of order" PPT download
Part One: New Knowledge Explanation
The current flows from one end of the battery through the wire, through the small bulb, and back to the other end of the battery, forming a complete circuit, and the small bulb will glow.
Something went wrong
If the small light bulb in the circuit does not light up, which part of the circuit has failed, causing the current to be interrupted?
Creation situation one
In the circuit, if two small bulbs are connected, they will light up, but if three small bulbs are connected, they will not light up;
Creation situation two
In the circuit, if two small light bulbs are connected, they will not light up;
Creation situation three
In the circuit, even if a small light bulb is connected, it will not light up.
Make a circuit detector
What method is used to detect faulty circuits?
Testing method: Check whether the connections in the circuit are intact.
Replacement method: Use another light bulb, battery, and wire to replace the materials in the circuit and see if the small light bulb can light up.
Detect the wire: Use the two detection heads of the circuit detector to connect the two ends of a wire. If the small bulb lights up, it means that the wire is not faulty; if the small bulb does not light up, it means that the wire is faulty.
Detect the light bulb: Use the two detection heads of the circuit detector to connect the two connection points of the light bulb. If the small light bulb lights up, it means that the light bulb is not faulty; if the small light bulb does not light up, it means that the light bulb is faulty.
Test the battery: Take out the battery from the battery box of the circuit detector, put the battery in the faulty circuit into the battery box of the circuit detector, and see if the small light bulb lights up. If the small light bulb lights up, it means that the battery is still there. If the small light bulb does not light up, it means that the battery is out of power.
When using a detector to detect faults in a circuit, you should pay attention to the following issues:
1. Touch the two detection heads of the circuit detector to each other to see if the light bulb emits light.
2. Use two detection heads to contact the two connection points of the components that may have problems in the circuit to see if the detector's bulb emits light.
3. Repeat the check several times.
Kind tips:
1. During the experiment, the group should work together and discuss quietly.
2. Record while experimenting.
3. Set aside the component where the fault was detected.
4. Replace good components in the material box to eventually light up the small light bulb in the faulty circuit.
PPT about circuit failure, part 2: expansion and extension
Household circuits generally consist of two household wires (also called power cords), energy meters, blade switches (now generally air switches), insurance equipment (air switches and other types of fuses that meet standards), electrical appliances, sockets, It is composed of wires, switches, etc. (mostly in parallel, in a few cases in series).
PPT about circuit failure, Part 3: Classroom exercises
1. Fill in the blanks
1. When using a "circuit detector" to detect a circuit, you must first ( ).
2. Connect the two detection heads of the circuit detector to both ends of a wire. If the small bulb lights up, it means this wire ( ); if the small bulb does not light up, it means this wire ( ).
2. Multiple choice questions
1. If the small light bulb does not light up, it means that there is no ( ) passing in the small light bulb.
A.Current B.Voltage C.Power supply D.Circuit
2. If there is no fault at the connection point of the circuit detector, the small light bulb will be ( ); if it is connected to the faulty place, the small light bulb will be ( )
A. Will light up. Will light up. B. Will not light up. Will not light up.
C. Will light up. Will not light up. D. Will not light up. Will light up.
PPT about circuit failure, part 4 content: Class summary
Using electricity to light a lamp requires a complete circuit. If the circuit fails, a circuit detector can be used to detect and eliminate the fault in the circuit.
Keywords: free download of Chinese PPT courseware for the second volume of the fourth grade of the textbook version, PPT download of Circuit Failure, electricity PPT download, .PPT format;
For more information about the "Electrical Circuit Faulty" PPT courseware, please click on the "Electrical Circuit Faulty" ppt tag.
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