First slide

Electric field

Question

An electron enters in an electric field with its velocity in the direction of the electric lines of force. Then

Easy

A

The path of the electron will be a circle
B

The path of the electron will be a parabola
C

The velocity of the electron will decrease
D

The velocity of the electron will increase

Solution

Because electric field applies the force on electron in the direction opposite to it’s motion.

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