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JAMB Physics 1995 Question 37

Question 37

Electrostatics

Two parallel plates at a distance of 8.0 × 10−3 m apart are maintained at a p.d. of 600 volts with the negative plate earthed. What is the electric field strength?

  1. A.4.8 V m−1
  2. B.75.0 V m−1
  3. C.4800.0 V m−1
  4. D.75000.0 V m−1
Show the answer and explanation

Answer: D (75000.0 V m−1)

Explanation

E = V/d = 600 ÷ (8.0 × 10−3) = 75 000 V m−1.