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Circuits

  • Series combination of resistors: The equivalent resistance is R = R1 + R2 + …
  • Parallel combination of resistors: If R1, R2, … are connected in parallel, the equivalent resistance R is such that 1/R = 1/R1 + 1/R2 + …
  • RC circuit: Connect a battery with emf E, a resistor with resistance R, and a capacitor with capacitance C, and a switch. When the switch is open, no charge flows and the capacitor remains uncharged. If the switch is closed at time t = 0, the capacitor begins charging. The charge on the capacitor, as a function of time t, is given by Q = CE [1 – exp(-t / RC)]. The product RC has the units of time and is called the time constant of the RC circuit.

Circuits

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

AP Physics B