PHYSICS 240 Midterm: PHYS 240 University of Michigan Winter 2006 f03 Exam2 1
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Instructions: fill in your name above, this will be a 1. 5 hour, closed book exam. You can write on both sides of the card if you like: you will be asked to show your university student id card when you turn in your exam. 0 = 8. 85 x 10-12 c2/nm2 k = 1/(4 0) qelectron=-1. 6 x 10-19 c qproton=1. 6 x 10-19 c melectron=9. 1 x 10-31 kg mproton=1. 67 x 10-27 kg. 1: which of the following is equivalent to the quantity 1000 ohms * 20 microfarads: 20000 joules/second, 0. 02 kilogram*meters/second, 0. 0002 volts, 0. 02 seconds, 20000 newtons/coulomb. 2: what is the equivalent resistance of the resistor network seen by the battery shown in the figure: 5r/2, 5r/3, 2r, 11r/5, r/2. 3: three identical light bulbs are connected in a circuit as shown. Each of the bulbs has a resistance of 30 , and the battery supplies a voltage of 30v. B consume: 30w, 60w, 10w, 20w, 50w.
