Question

A charged particle enters at right angle into a uniform magnetic field. What is the nature of charge particle if it experiences a force in a direction pointing vertically out of page.

Answer 1

Whenever a current carrying conductor is placed in a magnetic field, it experiences a force due to the magnetic field.

According to Fleming's Left Hand Rule, middle finger points to direction of current , first finger points to direction of magnetic field , thumb points to direction of force .

So,  we place our left hand like this with three fingers perpendicular to each other .

We find that only positive charge experience force in a direction pointing vertically out of page.

So, the nature of charge is positive charge  .

Answer 2

hope it is correct thanks