03_31_Circuits_4

# 03_31_Circuits_4 - Today 3/31 o Circuits i Current i...

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Today 3/31 o Circuits i Current i Potential (same as always) i Capacitance (energy and in circuits) i HW: 3/31 “Circuits 4” Due Thursday 4/3 i Exam 3 Thursday, 4/3 5-7 pm 116 Witmer Other room to be announced.

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Lab: RC Circuits o RC Circuits (circuits with resistor and a capacitor in series) o Current flows only while the capacitor charges up. The time to charge up depends on the product RC. Can also discharge the capacitor C R
Exam 3 o Parallel plate problem o Conceptual circuit problem (bulbs) o Resistor circuit problem (find current and voltage) o Capacitor problem (with resistors?)

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Loop Rule (voltage) o The sum of all voltages around any closed loop is always zero. (what goes up must come down) o or V A,A = 0 o !!must keep track of ups and downs!! (+/-) o Across capacitors, resistors, and batteries
Kirchhoff’s Rules, Junction o The sum of all currents at any junction is zero. (what goes in must come out) o !!must keep track of ins and outs!! (+/-) o Current only flows into and out of capacitors while charging and discharging. No current after enough time has passed through capacitors.

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Homework R 1 =20 100 R 1 =20 30 μ F 15V
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03_31_Circuits_4 - Today 3/31 o Circuits i Current i...

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