Class 12 Physics Electromagnetic Waves Ampere-Maxwell Law

Ampere-Maxwell Law

  • As Maxwell was able to correct the shortcomings of the Ampere’s circuital law therefore the law came to known as Ampere-Maxwell law.
  • Current which is arising due to the flow of charges is known as conduction current.
    • It is denoted by IC.
  • Current which is arising due to change in electric field is known as displacement current.
    • It is denoted by Id.
  • Therefore I = Ic + Id where I = total current
  • Ampere-Maxwell Law stated that
    • ∫dl = μ0 (Ic + Id)
    • ∫dl = μ0 Ic + μ0 ε0 (d ɸE/dt)
    • The above expression is known as Modified Maxwell Law

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