When an alpha particle is sent towards the west, it bends towards the north under the influence of a magnetic field. Find the direction of the magnetic field.
The direction of the magnetic field can be determined by the .
According to the rule, if we arrange our thumb, forefinger and the middle finger of the , then the thumb points towards the direction of the , the middle finger the direction of and the forefinger the direction of .
Since the direction of positively charged alpha particle is towards west, the direction of current will be the . Again the direction of magnetic force would be towards the .