Pick out the wrong statement.

Question

Pick out the wrong statement. (A) The gain in the K.E. of the electron moving at right angles to the magnetic field is zero. (B) When an electron is shot at right angles to the electric field, it traces a parabolic path. (C) An electron moving in the direction of the electric field gains K.E. (D) An electron at rest experiences no force in the magnetic field

Tardigrade Admin · Accepted Answer

Electron is negatively charged, hence experiences electrostatic force opposite to the direction of electric field. As a result, an electron moving in the direction of electric field loses kinetic energy.

Q. Pick out the wrong statement.

The gain in the K.E. of the electron moving at right angles to the magnetic field is zero.

When an electron is shot at right angles to the electric field, it traces a parabolic path.

An electron moving in the direction of the electric field gains K.E.

An electron at rest experiences no force in the magnetic field

Electron is negatively charged, hence experiences electrostatic force opposite to the direction of electric field. As a result, an electron moving in the direction of electric field loses kinetic energy.