practice_exam 1 - 1 6 Ω 12 Ω 15 Ω 25 Ω PHY232...

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Unformatted text preview: 1 6 Ω 12 Ω 15 Ω 25 Ω PHY232 Spring 2002 Practice Exam 1 2/5/02: Note : In Question 1, the equation for E had too many q’s in it. It’s now fixed. 1. What is the value of the electric field at the origin of a coordinate system if a 7 μ C charge is placed at the point (x,y) = ( - 0.18 m, - 0.24 m)? a) 7.0 · 10 5 N/C b) 2.1 × 10 6 N / C c) 70 N C d). 2.1 × 10 5 N / C e) zero 2. Consider the following statements. I. Resistance of parallel connected resistors is smaller than the value for each resistor. II. Capacitance of parallel connected capacitors is smaller than the value for each capacitor. III. Charged by a battery, a capacitor has the same magnitude of charge on each plate. Are the statements true or false? a) I, II and III are true. b) I and III are true, but II is false . c) I and II are true, but III is false. d) II is true, but I and III are false. e) I, II, and III are false. 3. Four resistors are connected in parallel to a voltage source as shown in the diagram to the right. The 25 Ω resistor carries a current of 5 A. What is the total current supplied by the battery to the resistors? a) 45A b) 35A c) 25A d) 15A e) 5A 4. A parallel plate capacitor with square plates 25cm on a side, separated by 1mm, is charged to 16 × 10- 12...
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This note was uploaded on 09/17/2011 for the course PHYS 1401 taught by Professor Violaruck during the Fall '07 term at Dallas Colleges.

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practice_exam 1 - 1 6 Ω 12 Ω 15 Ω 25 Ω PHY232...

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