feb 12 rc circuits
DESCRIPTION
AP Physics B notes courtesy of Mr. Sckalor at Great Neck South High School.TRANSCRIPT
Reminder: US Physics Team Round 1 ExamToday after school (2 hours)skillz required!
Title: Feb 127:59 AM (1 of 9)
Title: Feb 128:24 AM (2 of 9)
Title: Feb 128:26 AM (3 of 9)
Title: Feb 128:30 AM (4 of 9)
Title: Feb 128:39 AM (5 of 9)
Discharging a capacitorsimply connecting a charged capacitor to another circuit.The capacitor behaves like a (temporary) battery and delivers all its energy to the new circuit
Title: Feb 128:50 AM (6 of 9)
Title: Feb 129:02 AM (7 of 9)
The circuit shown above includes a switch S, which can be closed to connect the 3microfarad capacitor in parallel with the 10ohm resistor or opened to disconnect the capacitor from the circuit.
Case 1: Switch S is open. The capacitor is not connected. Under these conditions determine:a. the current in the batteryb. the current in the 10ohm resistorc. the potential difference across the 10ohm resistor
Case II: Switch S is closed. The capacitor is connected. After some time, the currents reach constant values. Under these conditions determine:d. the charge on the capacitore. the energy stored in the capacitor
Title: Feb 129:08 AM (8 of 9)
In the circuit shown above, i1 and i2 are the currents through resistors Rl and R2, respectively. V1, V2, and Vc are the potential differences across resistor R1 resistor R2, and capacitor C, respectively. Initially the capacitor is uncharged.a. Calculate the current i1 immediately after switch S is closed. b. On the axes below, sketch the potential difference V2 as a function of time t.
Assume switch S has been closed for a long time. c. Calculate the current i2. d. Calculate the charge Q on the capacitor. e. Calculate the energy U stored in the capacitor.
Title: Feb 129:21 AM (9 of 9)