Question

An electron enters a magnetic field at right angles to it. The direction of force acting on the electron will be

• A. To the right.
• B. To the left.
• C. Out of the page.
• D. Into the page.

Answer 1

The correct option is D Into the page.

According to Fleming's Left-Hand rule, the direction of force is perpendicular to the direction of the magnetic field and current. Here, since the direction of current is taken opposite to the direction of motion of electrons, the force is directed into the page.