Suppose you are sitting in a room facing one of the wall. An electron beam moving horizontally from the back goes towards the wall in front of you and is deflected to your left, what is the direction of magnetic field in the room?
Answers
Explanation:
The direction of the magnetic field is vertically downwards. The direction of current is from the front wall to the back wall because negatively charged electrons are moving from back wall to the front wall. The direction of magnetic force is rightward. Hence, using Fleming's left hand rule, it can be concluded that the direction of magnetic field inside the chamber is downward.
Answer:
An electron beam moving horizontally from back wall towards the front wail is equivalent to a current flowing in the opposite direction (i.e., from front wall towards the back wall). The deflection of electron beam as seen by observer is to his right side. On applying Fleming's left-hand rule we find that the magnetic field is acting in vertically downward direction.