1[C]) You charge up a copper ball and wait a short time, allowing the ball to re
ID: 1342433 • Letter: 1
Question
1[C]) 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
Correct, computer gets: ABDEI
2[C]) You bring an uncharged, identically shaped copper ball close to the first one (without touching them to each other). Which combination of statements is most accurate?
(A) The equipotential surface between the copper balls is spherical
(B) The equipotential surface between the copper balls is not spherical
(C) There are no equipotential surfaces in the space around the balls
(D) The physical surfaces of the copper balls are equipotential surfaces
(E) The physical surfaces of the copper balls are not equipotential surfaces
(F) There is a voltage difference between the surfaces of the copper balls
(G) There is no voltage difference between the surfaces of the copper balls
(H) A voltage difference is induced across the surface of the new copper ball
I found the solutions to #1 , i need solutions to #2
Explanation / Answer
the second sphere acquires a negative to the closer end and positive charge at far end
(B) The equipotential surface between the copper balls is not spherical
(D) The physical surfaces of the copper balls are equipotential surfaces
(F) There is a voltage difference between the surfaces of the copper balls
(H) A voltage difference is induced across the surface of the new copper ball
BDFH
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