Question

The figure shows the path of a positively charged particle 1 through a rectangular region of uniform electric field as shown in the figure. What is the direction of electric field and the direction of deflection of particles 2, 3 and 4?

• A. Top; down, top, down
• B. Top; down, down, top
• C. Down; top, top, down
• D. Down; top, down, down

Answer 1

Answer: (A)

The figure shows the path of a $+$ ve charged particle $(1)$ through a rectangular region of uniform electric field.

Since, $+ve$ charged particle moves as a parabolic path in electric field, it means the direction of electric field is upward. The direction of deflection of particle $(2)$ which is $-ve$ is downward.
The direction of deflection of particle $(3)$ which is $+ve$ is upward and direction of deflection of particle $(4)$ is downward.