1) You charge up a copper ball and wait a short time, allowing the ball to reach
ID: 1361091 • Letter: 1
Question
1) You charge up a copper ball and wait a short time, allowing the ball to reach electrostatic equilibrium. Which combination of statements is most accurate?
(A) The electric field within the ball is constant
(B) The electric field within the ball is zero
(C) The electric field within the ball is not constant
(D) The voltage on the ball's surface is constant
(E) The voltage throughout the ball is constant
(F) There is a voltage difference between different points on the ball's surface
(G) There is a voltage difference between the center of the ball and its surface
(H) The voltage in the space outside of the ball is constant
(I) There is a voltage difference between the center of the ball and a point far away from the ball
(J) There is no voltage difference between the surface of the ball and a point a few centimeters away from the ball's surface
Explanation / Answer
(A) The electric field within the ball is constant
(B) The electric field within the ball is zero
(D) The voltage on the ball's surface is constant
(E) The voltage throughout the ball is constant
(I) There is a voltage difference between the center of the ball and a point far away from the ball
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