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1. The electric field, E, as a function of x for a certain charge distribution is shown in figure above. The force that
a negative point charge, q = 1.6 x 10-1ºC, experiences at x = 4nm is (magnitude, direction)
(i) 6.4 x 10-25 N (to the left)
(ii) 6.4 x 10-25 N (to the right) (iii) zero
(iv )none of the above

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