Question

iii) An electron enters a magnetic field at right angles to it as shown in the
figure. The direction of force acting on the electron will be:

a) to the left
b) to the right
d) out of the page
c) into the page​

Answer 1

Answer:

into the page

Explanation:

We know that both the directions are perpendicular, thus for force direction=?

Using Fleming's left hand rule,

Direction of force is perpendicular to the direction of magnetic field and current.

Thus direction of force is opposite to electron motion into the page at 90°