Resistive Circuits Resistors in series Resistors in parallel

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Presentation transcript:

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

Resistors in series

Resistors in parallel

Voltage divider

Current divider

A series-parallel connection

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

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