q1_key - E = k p 5 × 10-9 25 2-10 × 10-9 25 2 P ˆ x N C...

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PHY-2054C-002, Fall 2008 Instructor: Dr. Bhattacharya Quiz #1-KEY, Tuesday, Sept 02 1. Two positive charges 5 nC and 10 nC are separated by 50 cm as shown in the accom- panying fgure. 5nC 10nC B A 25cm 10cm 25cm (a) Find the magnitude and direction o± the electric feld at the midpoint A between the charges. The electric feld From the 5nC charge is directed twoard right and From the 10 nC charge is directed toward leFt. ThereFore the net electric feld
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Unformatted text preview: E = k p 5 × 10-9 . 25 2-10 × 10-9 . 25 2 P ˆ x N / C =-720 ˆx N / C (b) Calculate the magnitude and direction o± the net ±orce on a negative charge -2nC located at the point B, 10 cm away ±rom the 5 nC charge. F = k p 5 × 10-9 . 1 2 + 10 × 10-9 . 6 2 P × 2 × 10-9 ˆ x N = 9500 ˆx N...
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This note was uploaded on 09/21/2009 for the course PHY 2054 taught by Professor Zmudskyy during the Fall '08 term at University of Central Florida.

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