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JAMB Physics 2005 Question 17

Question 17

Electrostatics

The electric field intensity in a place where a charge of 10−10 C experiences a force of 0.4N is

  1. A.8.0 × 10−12NC−1.
  2. B.8.0 × 109 NC−1.
  3. C.4.0 × 109 NC−1.
  4. D.4.0 × 10−11 NC−1.
Show the answer and explanation

Answer: C (4.0 × 109 NC−1.)

Explanation

E = F/q = 0.4 ÷ 10−10 = 4.0 × 109 N C−1.