AP Physics Chapter 19DC Circuits

•See Circuit symbols chart page 555.

19-1 Resistors in Series and Parallel

• Series Circuits

• Current is constant in a series circuit.

• Resistors in series are added…

• Req=R1 + R2 + R3

• V=V1 + V2 + V3=IR1 + IR2 + IR3

• V=IReq

Parallel Circuits

• I=I1 + I2 + I3

• Voltage is constant in a parallel circuit.

• 1/Req=1/R1 + 1/R2 + 1/R3….

• See diagrams page 555-558

• See Example 19-1 and 19-2 p558

• See Example 19-3 and 19-4 p560 and Example 19-6 p561

HOMEWORK• P581 PR# 1-7 and 15 due Thurs. BOP