First slide

Motion of a charged particle

Question

A charged particle moves in magnetic field $\vec{B} = 10 \hat{i}$ with initial velocity $\vec{u} = 5 \hat{i} + 4 \hat{j}$ . The path of the particle will be

Easy

A

Straight line
B

Circle
C

Helical
D

none of these

Solution

Y-component of velocity will make the particle to move in circle whereas X-component of velocity will make particle move along X-axis. So, motion is Helical

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