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NEET2008PhysicsElectrostaticsActual

The electric potential at a point in free space due to a charge Q coulomb is Q 10¹¹ volts. The electric field at that point is

Options

  1. A12 ₀ Q 10²² volt/m
  2. B4 ₀ Q 10²² volt/m
  3. C12 ₀ Q 10²⁰ volt / m
  4. D4 ₀ Q 10²⁰ volt/m

Correct answer

B. 4 ₀ Q 10²² volt/m

Step-by-step solution

aligned V & = 1 4 ₀ Q R =Q 10¹¹ volt E & = 1 4 ₀ Q R^2 = V R =Q 10¹¹ 4 ₀ 10¹¹[ from ...(i) ] & =4 ₀ Q 10²² volt / m aligned

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