An analogy to the above statement is that when lightning strikes a car, the charge that
appears on the car's metal surface does not affect its interior. Due to this passengers are recommended to sit
inside the car. why net electric field is zero as it is not spherical .

Dear Student
In electrostatics free charges in a good conductor reside only on the surface. So the free charge inside the conductor is zero. So the field in it is caused by charges on the surface. Since charges are of the same nature and distribution is UNIFORM, the electric fields cancel each other.
So whether it is shape of car or sphere, important is good conductor/ metal. So the charge is only on surface not inside the conductor.


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