The electric field strength 5.3 10^-11 m from a point charge of 1.6 10^-19 C in free space is:

  1. 2.56 10^11 N/C
  2. 1.02 10^12 N/C
  3. 5.12 10^11 N/C
  4. 27.1 N/C
Answer

C) 5.12 10^11 N/C

E = kQr^2 = 8.99 10^9 1.6 10^-19(5.3 10^-11)^2 = 5.12 10^11 N/C. SLO P-11-E-08 · Application

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