Q4 - a(1.5 pts After the switch is closed will current flow...

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Physics 7B Quiz 4 Grade: Name: _______________________ ID: _______________________ DL Section: I certify by my signature that I will abide by the code of academic conduct of the University of California. Signature No books or notes. Calculators OK. Show all your work below. Answers alone do not receive credit! NOTE: This is a problem you have not seen before. However, it is very easily done by simply applying what you have learned about transport in electric circuits, including capacitors. Deep breath. In the circuit above, the capacitor is charged to 8 volts. It is on the other side of the circuit from a 4V battery, with a resistor in series.

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Unformatted text preview: a) (1.5 pts) After the switch is closed, will current flow initially? In which direction (clockwise or counter clockwise)? Explain your reasoning, using the linear transport model for circuits. b) (1.5 pts) After a long time (much greater than RC), what is the current in the circuit? Explain. c) (1.5 pts) Indicate the current versus time on the graph at the right, with positive current for the clockwise direction, and negative current for counterclockwise. Label the axes for full credit. transport equation for electric circuits: Δ V = E- IR charge on capacitor: Q=CV energy in capacitor: U = CV 2 /2 2 3 4...
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Q4 - a(1.5 pts After the switch is closed will current flow...

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