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A circular non-conducting ring is split into two semi-circles. The top half has a positive charge Q evenly distributed on it, and the bottom half has a negative charge (-Q), NOT evenly distributed. The charge on the bottom half is skewed to the left. If the voltage is zero at infinity, the voltage evaluated at the center of the ring is
Positive
Negative.
Depends on the trajectory used to go from infinity to the center
Zero
a beam of electrons is moving through a region of space in which there is an electric field of intensity 3.4 x 104 vm
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