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Ohm’s Law Voltage difference = current • resistance

Ohm’s Law Voltage difference = current • resistance volt = ampere • ohm.  V = I • R. Series vs. Parallel Circuits. Parallel circuits constant voltage (  V, volts) . Series circuits constant current (I, amps).

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Ohm’s Law Voltage difference = current • resistance

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  1. Ohm’s Law Voltage difference = current • resistance volt = ampere • ohm V = I • R

  2. Series vs. Parallel Circuits Parallel circuits constant voltage ( V, volts) Series circuits constant current (I, amps)

  3. Circuits What happens to the resistance when you increase the # of lightbulbs in series? In parallel?

  4. Circuits Use the Ohm's law equation to determine the missing values in the following circuits.

  5. Series Circuits same current everywhere Ibattery = I1 = I2 = I3 = Vbattery / Req • Vbattery= V1 + V2 +  V3 + ... • Req = R1 + R2 + R3 + ...

  6. Series Circuits - equivalent circuit • Req = R1 + R2 + R3 + ...

  7. Series Circuits

  8. Parallel Circuits same voltage everywhere Vbattery=  V1 =  V2 =  V3 = ... • Itotal = I1 + I2 + I3 + ... • 1 / Req = 1 / R1 + 1 / R2 + 1 / R3 + ...

  9. . Parallel Circuits • 1 / Req = 1 / R1 + 1 / R2 + 1 / R3 + ...

  10. Parallel Circuits

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