Question

A charged particle enters at right angles into a uniform magnetic field as shown: What should be the nature of charge on the particle if it begins to move in a direction pointing vertically out of the page due to its interaction with the magnetic field?

Answer 1

Hint: A charged particle enters at right angle into a uniform attractive field as appeared in figure. we need to discover the nature of charge on the molecule in the event that it starts to move in a course pointing vertically out of the page because of its cooperation with the attractive field by Fleming’s left hand rule.

Complete step by step answer
At whatever point a current conveying conductor is put in a magnetic field, it encounters a force because of the magnetic field.
As per Fleming's Left Hand Rule, middle finger focuses to direction of current, first finger focuses to direction of magnetic field, thumb focuses to direction of force.
So, we place our left hand like this with three fingers opposite to one another.
We locate that solitary positive charge experience force in a direction pointing vertically out of page.

So, the nature of charge is positive.

Additional Information
Fleming's left hand rule is utilized to determine the bearing of power applied on a current conveying wire set in an attractive field. In the event that the thumb, forefinger (along attractive field) and center finger(along current) are held mutually perpendicular, then the thumb provides the guidance of power on the wire.
The Left Hand Rule shows what happens when an electrical flow enters an attractive field. You have to bend your hand in an unnatural situation for this standard. As should be obvious, if your forefinger focuses toward an attractive field, and your center finger, at a 90 degree point to your record, focuses toward the current, at that point your all-encompassing thumb (shaping a L with your list) focuses toward the power applied upon that molecule. This standard is additionally called Fleming's Left Hand Rule.

Note At the point when a current-conveying conductor is put in an outside attractive field, the conductor encounters a power opposite to both the field and to the bearing of the current flow the charge is positive in nature. On applying Fleming's left-hand rule, we locate that lone positive charge will encounter a power pointing vertically outwards because of its communication with the attractive field.