A charged conducting sphere of radius 5 cm has a field of 9000 N/C at 10 cm from its centre. At 20 cm from its centre, the field is:

  1. 36,000 N/C
  2. 9000 N/C
  3. 4500 N/C
  4. 2250 N/C
Answer

D) 2250 N/C

E propto 1/r^2. SLO P-11-E-05 · Knowledge

Physics MCQ · More Electrostatics MCQs · Practise