"Circuit Analysis and Application" PPT

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"Circuit Analysis and Application" PPT

Part One: Characteristics of Series Circuits

Total current I=I1=I2

The current in a series circuit is equal everywhere.

Total voltage U=U1+U2

The total voltage across a series circuit is equal to the sum of the voltages across the series conductors.

Total resistance R=R1+R2+…

When conductors are connected in series, it is equivalent to adding __

Example 1: Connect the 5Ω resistor R1 and the 15Ω resistor R2 in series, and connect them to a power supply with a voltage of 6V. What is the current in this series circuit?

Example 2: When a small light bulb emits light normally, the voltage across it is 2.5 volts, and the current flowing through it is 0.2 amps. Now use a power supply with a voltage of 4.5 volts to power it. In order for the small light bulb to glow normally, what size resistor needs to be connected in series?

Circuit Analysis and Application PPT, Part 2: Characteristics of Parallel Circuits

①Current in the main circuit of parallel circuit

equal to the sum of the currents in each branch.

Total current I= I1+I2+……

②The voltages at both ends of the parallel circuit are equal.

Total voltage U= U1=U2=……

③Calculation formula of total resistance of parallel circuit

The reciprocal of the total resistance of a parallel circuit is equal to the sum of the reciprocals of the parallel resistances.

When several conductors are connected in parallel, it is equivalent to increasing the number of conductors.

Circuit Analysis and Application PPT, Part Three: Resistors in Series and Parallel

Explanation of resistors in series

Several resistors connected in series are equivalent to increasing the length of the conductor. So the total resistance is greater than the resistance of any one conductor.

Explanation of resistors in parallel

When several resistors are connected in parallel, the total resistance is smaller than any one resistor. This is because connecting conductors in parallel is equivalent to increasing the cross-sectional area of ​​the conductor.

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, circuit analysis and application PPT download, .PPT format;

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"Circuit Analysis and Application" PPT courseware:

"Circuit Analysis and Application" PPT courseware Part 1: Characteristics of series circuits ①The current in a series circuit is equal everywhere. I=I1=I2= ②The total voltage across the series circuit is equal to the sum of the voltages across the series conductors. U=U1+U2+ ③The total resistance of the series circuit..

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Update Time: 2024-10-23

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

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