Quiz#2-soln0

Quiz#2-soln0 - Quiz#2 Name PS PHYS 1302 Summer 6W2 2009...

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Quiz #2 Name ______________ PS#________________ PHYS 1302 Summer 6W2 2009 Lau ------------------------------------------------------------------------------------------------------------ Constants k=1/(4 πε 0 )= 8.99 x 10 9 in SI units. ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 1. Find the electrostatic energy between two point charges, of 140 μ C each, separated by 6 m. Solution 9 6 2 1 2 (8.99 10 )(140 10 ) 30 6 kq q V J r - × × = = = A. 5 J B. 10 J C. 20 J D. 30 J E. 40 J ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 2. A charge of 0.50 C has an electric energy of 2.0 J at a given point in space. Determine the electric potential at that point in space. Solution 2.0 4.0 0.5 U J U QV V V Q C = = = = A. 0.00 V B 0.25 V C. 0.50 V D. 2.0 V E. 4.0 V ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 3. Four positive point charges of 1.1 x 10 -10 C each are located at the four corners of a square. Determine the electric potential at the center of the square. The center is 2.0 m

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Quiz#2-soln0 - Quiz#2 Name PS PHYS 1302 Summer 6W2 2009...

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