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Resistive Circuits

Resistive Circuits

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Resistive Circuits

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  1. Resistive Circuits • Resistors in series • Resistors in parallel • Voltage divider • Current divider • The bridge

  2. Electrical resistance Resistor’s obey Ohm’s Law: V = I R The voltage “drop” across a resistor is linearly proportional to the current passing through the resistor

  3. Resistors in series

  4. Resistors in parallel

  5. Voltage divider

  6. Current divider

  7. A series-parallel connection

  8. The bridge The bridge is “balanced” when the ammeter reads zero • If ammeter current = 0, I1 = I3 and I2 = Ix • The points A and B are at the same potential • So I3R3 = IxRx and I1R1 = I2R2

  9. Classwork #1 Find the total current emitted by the voltage source