PHYS 2220 Midterm: 2014_ex2
31 Jan 2019
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Circle your discussion ta: mei hui teh (lcb 2 1 5) You may use your one sheet of notes and formulas, but you must not collaborate with any other person. Do all three problems, showing your method and working clearly (a correct answer alone is not necessarily sufficient). Be sure to include correct si units in your answers where appropriate. [8] (d) when two resistors are connected in series their equivalent resistance is 50 q, and when they are connected in parallel their equivalent resistance is 8. 0 q. Chris: the sketch at the right shows a circuit containing a battery of emf s and negligible internal resistance, a switch. S that is initially open, a capacitor of capacitance c that is initially uncharged, and resistors ri, r2, (a) the switch s is now closed at time t = 0. [9] (ii) t = o (after a very long time).
