How do change in magnetic flux induces emf in a coil ?

[hanii]

According to Faraday's laws... change in magnetic flux linking a coil induces current in the coil.., but for conduction of electrons ...there must be an electric field ! how is the electric field induced in the coil??

 

[tiny-tim]

welcome to pf!

hi hanii! welcome to pf!

… for conduction of electrons ...there must be an electric field !

not true …

for example, an electron moving in and perpendicular to a purely magnetic field will move in a circle at constant speed …

that's a current with no https://www.physicsforums.com/library.php?do=view_item&itemid=2" ! ​

(and if it moved through an electric field, it would do work and either lose or gain energy, but here it doesn't)

 

[silmaril89]

The curl of the electric field is equal to the negative of the change in the magnetic field with respect to time. Take a look at Maxwell's equations. So, when there is a changing magnetic field (which we have in this case), an electric field is induced which drives the electrons around the coil.