EMI


EMI
Magnetic flux
  • Net flux through the surface


  • Electromagnetic induction

    (i) e = 

    (ii) d = 

    (iii) Induced current 

    (iv) Induced charge 
  • Induced electric field

    E = where r  a.
  • EMI due to translatory motion

    where E = vB
  • Motion of conducting rod on an inclined plane

    (i) Induced current i = 

    (ii) Force Fm = mg tan 

    (iii) Constant velocity vT = 

    Motional emi in loop by generated area
  • Induced current 
  • Magnetic force Fm = 
  • Electrical power Pthermal = 
  • Motion of conductor rod in a vertical plane

    (i) Magnetic force Fm = 

    (ii) Terminal velocity vT = 

    Periodic EMI
  • Induced emf in coil

    e = 
  • Induced current


  • Current amplitude



    Self induction

    (i) For coil L = 

    (ii) For a circular coil L = 

    (iii) For a solenoid L = 

    (iv) Self inductance L = 

    Mutual induction

    (i) Coefficient of mutual inductance

    M = , N1, N2 total number of turns of the two solenoids.

    (ii) For two coupled coils

    M = K
  • Magnetic potential energy of inductor

    U = 

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