physics_6c_sp09_final_exam

# physics_6c_sp09_final_exam - NAME Physics 6C Spring 2009...

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NAME________________________________________________ Physics 6C Spring 2009 Final Exam 1 2 3 4 5 6 Total

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1. (35 points) A very long cylinder of radius R has a uniform charge density ρ . Find the electric field a) for r > R b) for r < R. R
2. (30 points) 3.00 Ω 6.00 Ω b a) Find the equivalent resistance between points a and b . b) If the potential drop between a and b is 10.0 volts, find the current in each resistor. c) If the 2.00 Ω resistor is replaced by a wire, what power is dissipated in the 3.00 Ω resistor? a 2.00 Ω

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3. (35 points) E R C r The capacitor is initially uncharged. Using your knowledge of how capacitors behave in circuits, find a) the initial current through the battery just after the switch is closed. b) the steady state current through the battery when the switch has been closed for a long time. c) the maximum voltage across the capacitor.
A wire of radius R carries a current I that is uniformly distributed over its cross- sectional area. Find the magnetic field B a) for r > R b) for r < R. c) Sketch a graph of B vs. r.

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physics_6c_sp09_final_exam - NAME Physics 6C Spring 2009...

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