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COMEDK2024PhysicsElectrostatics

Four charges each with charge +q are placed at the four corners of a square of side l , a charge -q 4 is at centre of the square. Force on the charge at the centre due to other charges is

Options

  1. AK q^2 l^2
  2. BK 2 q^2 l^2
  3. Czero
  4. DK 2 2 q^2 l^2

Correct answer

C. zero

Step-by-step solution

Force due to each q charge on -q / 4 is balanced by diagonally opposite charge. F_ net =0

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