Two charges 10   μC and - 10   μC are placed at points A and B separated by a distance…

Two charges 10 μC and -10 μC are placed at points A and B separated by a distance of 10 cm. Find the electric field at a point P on the perpendicular bisector of A B, at a distance of 12 cm from its mid-point.

  1. 16.4×106 N C-1
  2. 28.4×106 N C-1
  3. 8.2×106 N C-1
  4. 4.1×106 N C-1

Solution

The net electric field, Enet=2EAcosθ

From the arrangement of chargers, cosθ=513

Net electric field, Enet=2×9×109×10×10-613×10-22×513

⇒Enet=4.1×106 N/C

Asked in: AP EAMCET 2021 (20 Aug Shift 2)

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