39 - Final Review

39 - Final Review - Physics 212 Fall 2009 11/04/09 Concept...

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Physics 212 Fall 2009 11/04/09 Concept Review
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Force Direction Which of the arrows best represents the direction of the net force on charge +Q due to the other two charges? +2 Q +4 Q + Q 1 2 3 4 5 d d
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Conducting Sphere A conducting sphere (shown in grey in the drawing) of radius R has a charge q distributed uniformly over its surface. A spherically-shaped Gaussian surface with a radius r < R is represented in the drawing by the dashed circle. Applying Gauss’ law, what is the magnitude of the electric Feld inside the Gaussian sphere? a ) k q r b ) k q r 2 c ) k rq R d ) 0 e ) k q R
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Non-Conducting Sphere A solid insulating sphere of radius R contains positive charge that is uniformly distributed throughout the volume of the sphere. Which of the graphs below gives the magnitude E of the electric Feld as a function of the distance r from the center of the sphere?
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Electric Potential A positive charge is located at the origin. What is the direction of the electric potential of the positive charge?
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39 - Final Review - Physics 212 Fall 2009 11/04/09 Concept...

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