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JEE Main202225 Jul 2022Morning ShiftPhysicsUnits and DimensionsActual

Which of the following physical quantities have the same dimensions?

Options

  1. AElectric displacement D → and surface charge density
  2. BDisplacement current and electric field
  3. CCurrent density and surface charge density
  4. DElectric potential and energy

Correct answer

A. Electric displacement D → and surface charge density

Step-by-step solution

Electric displacement D → = ϵ 0 E → D = ϵ 0 E = ϵ 0 σ ϵ 0 D = σ And surface charge density = σ . Thus, electric displacement D and surface charge density have same dimension.

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