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Question: Answered & Verified by Expert
A charge of 1 μC is divided into two parts such that their charges are in the ratio of 2:3. These two charges are kept at a distance 1 m apart in vacuum. Then, the electric force between them (in N) is -
PhysicsElectrostaticsNEET
Options:
  • A 0.216
  • B 0.00216
  • C 0.0216
  • D 2.16
Solution:
2388 Upvotes Verified Answer
The correct answer is: 0.00216
q1q2=23

q1 + q2 = 1 μC

q1 = 25μC , q2= 35 μC

F = Kq1q2r2

F = 9 × 1 0 9 × 2 5 × 3 5 × 1 0 - 1 2 1 2

=0.00216N

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