Question

An eletron beam is deflected in a given field. How will you detect whether the given field is a uniform magnetic field or a uniform electric field?

Answer 1

Answer:

If it goes in the opposite direction of the field it is Electric field,as only +ve charge is carried along the electric field. hope you get it! By observing the path of the beam after it enters in the field,if the path is a perfect circle or helical then it is a magnetic field otherwise it's an electric field.