question_answer

A point charge \[+q\], is placed at a distance dfrom an isolated conducting plane. The field at a point P on the other side of the plane is:                                                                                                             (NCERT EXEMPLAR)

A) directed perpendicular to the plane and away from the plane  

B) directed perpendicular to the plane but towards the plane

C) directed radially away from the point charge

D) directed radially towards the point charge             

Correct Answer: A

Solution :

 directed perpendicular to the plane and away from the plane When a point charge +q is placed at a distance  d from  an  isolated conducting plane, some negative charge develops on the surface of the plane towards the charge and an equal positive charge develops on opposite side of the plane. Hence, the field at a point P on the other side of the plane is directed perpendicular to the plane and away from the plane as shown in figure.