physB notes- RC ckts

Physics, Vol. 1, Second Edition

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Reminder: US Physics Team Round 1 Exam Today 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 capacitor simply 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 battery b. the current in the 10ohm resistor c. 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 capacitor e. the energy stored in the capacitor Title: Feb 129:08 AM (8 of 9) In the circuit shown above, i 1 and i2 are the currents through resistors R l and R2, respectively. V 1, 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 i 1 immediately after switch S is closed. b. On the axes below, sketch the potential difference V 2 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) ...
View Full Document

Ask a homework question - tutors are online