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# problems_28 - PHY2061 R D Field Chapter 28 Problems Problem...

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PHY2061 R. D. Field Problems Chapter 28 Page 1 of 6 Chapter 28 Problems Problem 1: If the potential difference between points A and B is equal to V A -V B = 3x10 4 Volts , how much work ( in milliJoules ) must be done ( against the electric force ) to move a change particle ( Q = 3 microC ) from point A to point B without changing the kinetic energy of the particle? Problem 2: Eight identical point charges, Q , are located at the corners of a cube with sides of length L . What is the electric potential at the center of the cube? ( Take V = 0 at infinity as the reference point. ) Problem 3: What is the electric potential energy of the configuration of eight identical point charges, Q , at the corners of the cube with sides of length L in the previous problem? Problem 4: Two point charges Q 1 = Q and Q 2 = Q are on the x-axis at x = +L and x = -L and a third point charge Q 3 = Q is on the y-axis at the point y = L as shown in the Figure . What is the electric potential difference, V = V 2 -V 1 between the point P 2 at the midpoint of the line between Q 1 and Q 3 and the point P 1 at the origin? Problem 5: Two point charges Q 1 = Q and Q 2 = Q are on the x-axis at x = +L and x = - L and a third point charge Q 3 = Q is on the y-axis at the point y = L as shown in the previous Figure . What is the electric potential energy of this charge configuration? 2 x = L x = -L Q 3 =Q x-axis y = L Q 2 =Q Q 1 =Q y-axis 1

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PHY2061 R. D. Field Problems Chapter 28 Page 2 of 6 L P L Q Q Q Problem 6: In the problem 4 , how much work must be done ( against the electric force ) to move the charge Q 3 from the point y = L
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## This note was uploaded on 05/31/2011 for the course PHY 2061 taught by Professor Fry during the Spring '08 term at University of Florida.

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problems_28 - PHY2061 R D Field Chapter 28 Problems Problem...

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