21 - Review II

# 21 - Review II - PHYS Fall 2009 Review II Schedule...

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PHYS Fall 2009 Review II 10/14/09

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Schedule Wednesday Magnetic Concepts, HW problems Review of Earlier Material Friday - Exam2! Same procedure as Exam1
Magnetic Force on a Wire A portion of a loop of wire passes between the poles of a magnet as shown. We are viewing the circuit from above . When the switch is closed and a current passes through the circuit, what is the movement, if any, of the wire between the poles of the magnet? a) The wire moves toward the north pole of the magnet. b) The wire moves toward the south pole of the magnet. c) The wire moves upward (toward us). d) The wire moves downward (away from us). e) The wire doesn’t move.

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Equivalent Circuit What is the equivalent capacitance, C eq , of the combination below? o o C C C C eq 1) C eq = 3/2 C 2) C eq = 2/3 C 3) C eq = 3 C 4) C eq = 1/3 C 5) C eq = 1/2 C
Resistors in Series and Parallel R eq = 2 R R eq = R R eq = R 2 i A = V R i B = V 2 R i C = 2 V R total current total power P A = V 2 R P B = V 2 2 R P C = 2 V 2 R T F T F F

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21 - Review II - PHYS Fall 2009 Review II Schedule...

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