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## Resistive Circuits

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**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**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