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Find the electric field intensity of two charges 2C and -1C separated by a distance 1m in air.(a) 18 X 10^9(b) 9 X 10^9(c) 36 X 10^9(d) -18 X 10^9The question was posed to me during an interview.My question is from Electric Field Intensity in division Electrostatic Fields of Electromagnetic Theory |
Answer» CORRECT OPTION is (b) 9 X 10^9 The BEST explanation: F = q1q2/(4∏εor2) = -2 X 9/(10^-9 X 12) = -18 X 10^9 E = F/q = 18 X 10^9/2 = 9 X 10^9. |
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