A charged particle of mass $$2$$ x $$10-12$$ kg carrying a charge of $$4$$ x $$10-9$$ coul is projected in a uniform magnetic field of $$2$$ x $$10-4$$ tesla with a velocity of $$10$$ $$m/s$$ making an angle of $$60$$° with the magnetic field. If acceleration due to gravity in that field is zero, then length of path praversed by the particle in $$1$$ minute is

Question

Infinity Learn · Accepted Answer

The path followed by the particle is a helix and speed of the particle remains unchanged as work done by the magnetic force is zero.∴ length of path traversed $$=$$ speed x time $$=$$ $$10$$ x $$60$$ m $$=600$$ m.

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