mt2-2008 - PHYS 102 General Physics II Midterm Exam II,...

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PHYS 102 – General Physics II Midterm Exam II, April 26, 2008 Duration: 100 minutes NAME:. ................................................................... Section:. ..................... Q.1 (35) Q.2 (35) Q.3 (35) Total (105) Suggestions: 1. Read the questions carefully. 2. State the solutions clearly and with necessary comments (explanations). 3. Write legibly. 4. Check your results in terms of dimensions, units, and special limits of the problem. Note: Solutions will be available just after the exam at http://www.fen.bilkent.edu.tr/~phys102
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Q.1 (35 points) RC Circuit An EMF source with potential difference ε and internal resistance r is connected to a resistor R and a capacitor with capacitance C in series connection through a switch S as in the figure. Initially there is no charge in the capacitor and at t =0 switch S is closed. Write your answers in terms of ε , r , R , C and t . (a) (5pts) Show the direction of the positive current flow and write down the equation for charge on the capacitor for t >0, using Kirchhoff’s rules. (Note that your equation should include charge q , only (not current) as a dependent variable.
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mt2-2008 - PHYS 102 General Physics II Midterm Exam II,...

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