CIRCUITS AND CURRENT ELECTRICITY

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CIRCUITS AND CURRENT ELECTRICITY
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What do resistors do?
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Resistance in wires

• Factors affecting resistance
• Length
• Width
• Temperature
• material

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Mechanical and electrical circuits

• Energy source conversion
• Ladder
• Battery
• Current
• Students
• charges

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Mechanical and electrical circuits

• Resistance and energy loss
• Slide
• resistor
• Ohmic devices
• Power dissipation

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Mechanical and electrical circuits

• Series
• Parallel
• Combination circuits

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Circuit applications

• Voltage divider
• two resistors
• potentiometer
• Current divider (shunt)

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Meters in circuits

• Ammeters
• Voltmeters

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Batteries

• Internal resistance
• Ideal
• Real

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Conventional current Vs. charge flow

• Electron Vs. proton flow