Complete Question
Consider a circular region of a plane. If there is a changing electric field perpendicular to that plane, what can you say about any magnetic field in the circular region of the plane?
A :
The magnetic field in the plane will exist in the form of closed concentric loops in the circular region.
B :
Nothing. An electric field says nothing about a magnetic field.
C :
The magnetic field will be perpendicular to the plane.
D :
There will be no magnetic field.
Answer:
Option A is the correct answer
Explanation:
Generally when there is a change in electric field,  magnetic field is  produced and  this magnetic field is perpendicular to the changing  electric field
 Now from the question we are told that the changing electric field is moving in the direction perpendicular to the plane so the generated magnetic field  will exist on the plane in the form of closed concentric loops in the circular region.
