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Question

An electron moving to the east in a horizontal plane is~ deflected towards south by a magnetic field. The direction of this magnetic field is :
  1. towards north
  2. towards west
  3. downwards
  4. upwards

A
downwards
B
upwards
C
towards north
D
towards west
Solution
Verified by Toppr

Right hand rule:
direction of velocity of charge : Index finger
direction of magnetic field : middle finger
direction of force : thumb
According to right hand rule,The electron moving to east (index finger).
The plane is deflected towards south(middle finger),The direction of thumb is downward (thumb).

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