Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the directionof magnetic field?

Imagine that you are sitting in a chamber with your back to one wall.

1.	Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the directionof magnetic field?
Answer» Solution : The current DUE to moving electron beam is in a DIRECTION opposite to MOTION. The force on electron is towards right. By Fleming.s left hand rule, the direction of magnetic field is vertically downward.