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Problem Solving 27 Two point charges 2.5uC and -3.6nC are separated by a distance of 3.2cm. Determine the electric force felt by Q1 from Q2 O -8.79 x 10-12 O -7.91 N O -0.079 N O -8.79 x 10-10 28 What is the magnitude of the electric field at a field point 375mm from a point charge 14nc? 895 O 896, 000 336 N 336,000 N 29 Determine the point charge of 13.05 N/C and 550cm 3.88 x 109 4.39 x 10-8 3.55 x 1012 4.79 x 10-11