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Problem_E. field-spring2011

# Problem_E. field-spring2011 - Spring-2011 Problems Set...

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Spring-2011 Problems: Set 1-Electric Field 1. The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0x10 -10 m is 3.7x10 -9 N. (a) what is the charge of each ion? (b) How many electrons are missing from each ion? 2. An atom of plutonium-239 has a nuclear radius of 6.64 fm and the atomic number Z = 94.Assuming that the positive charge of the nucleus is distributed uniformly, what are the magnitude and direction of the electric field at the surface of the nucleus due to the positive charge? 3. Four charges are arranged in a square with sides of length 5 cm as shown in Fig below. What are the magnitude and direction of the electric field at the center of square if q = 1.0 x 10 -8 C? 4. In Fig.3, charges are placed on the vertices of an equilateral triangle. For what a value of Q (both sign and magnitude) does the total electric field vanishes at C? 5.

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Problem_E. field-spring2011 - Spring-2011 Problems Set...

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