copyright © 2009 pearson education, inc. admin: assignment 8 is posted due monday note that the...
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![Page 1: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/1.jpg)
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Admin: •Assignment 8 is posted
• Due Monday• Note that the phase angle for the last question is
given in radians
•Second mid-term date is Wednesday May 6th
These are in radians
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This is the one I’ll give you on the formula sheet
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26-5 Circuits Containing Resistor and Capacitor (RC Circuits)
Example 26-11: RC circuit, with emf.
The capacitance in the circuit shown is C = 0.30 μF, the total resistance is 20 kΩ, and the battery emf is 12 V. Determine
The maximum charge is the emf × C = 3.6 μC.
(d) the current I when the charge Q is half its maximum value,
(e) the maximum current, and
(f) the charge Q when the current I is 0.20 its maximum value.
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How about this one?
Find an expression for the voltage across the capacitor
Find an expression for the current through the battery
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How about this one?
![Page 6: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/6.jpg)
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or this one?
![Page 7: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/7.jpg)
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or this one?
![Page 8: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/8.jpg)
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or this one?
So which will charge faster?
![Page 9: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/9.jpg)
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and this one?
![Page 10: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/10.jpg)
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and this one?
![Page 11: Copyright © 2009 Pearson Education, Inc. Admin: Assignment 8 is posted Due Monday Note that the phase angle for the last question is given in radians Second](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649ebb5503460f94bc338c/html5/thumbnails/11.jpg)
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If an isolated charged capacitor is connected across a resistor, it discharges:
Discharging a capacitor
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Discharging a capacitor
Once again, the voltage and current as a function of time can be found from the charge:
and
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26-5 Circuits Containing Resistor and Capacitor (RC Circuits)
Example 26-12: Discharging RC circuit.
In the RC circuit shown, the battery has fully charged the capacitor, so Q0 = CE. Then at t = 0 the switch is thrown from position a to b. The battery emf is 20.0 V, and the capacitance C = 1.02 μF. The current I is observed to decrease to 0.50 of its initial value in 40 μs.
(a) What is the value of Q, the charge on the capacitor, at t = 0?
(b) What is the value of R?
(c) What is Q at t = 60 μs?
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26-5 Circuits Containing Resistor and Capacitor (RC Circuits)
Conceptual Example 26-13: Bulb in RC circuit.
In the circuit shown, the capacitor is originally uncharged. Describe the behavior of the lightbulb from the instant switch S is closed until a long time later.
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26-5 Circuits Containing Resistor and Capacitor (RC Circuits)
RC circuits are often used when timing is important.
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26-5 Circuits Containing Resistor and Capacitor (RC Circuits)
RC circuits are often used when timing is important.
Windshield wipers
Clocks/ Oscillators
Digital Voltmeter
Security light
Heating systems