Question

state the effect of a magnetic field on the path of a moving charge particle

Answer 1

magnetic field attract or repel the particle coming towards it

Answer 2

If the particle is initially traveling perpendicular to a uniform magnetic field, then it will travel in an arc tracing out a circle (over and over again). If the particle is not traveling completely perpendicular then it will trace out a path that looks like a spring or slinky (circular when viewed from the top, but steadily going up). If the particle is traveling initially in a direction perfectly aligned (or anti-aligned) with the magnetic field, then it will continue perfectly along that line with no deviation and never feel any influence from the field.