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# Resistive Circuits

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

## Resistive Circuits

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### Presentation Transcript

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

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