If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the

Question

If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the (A) electron will turn to its right (B) electron will turn to its left (C) velocity of the electron will increase (D) velocity of the electron will remain Unchanged

Tardigrade Admin · Accepted Answer

In direction of velocity of an electron is in the direction of field, then θ=0° Force, F=q v B sin θ (∵ sin 0°=0) =0 Force is zero. So, velocity of an electron will remain same.

Q. If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the

electron will turn to its right

electron will turn to its left

velocity of the electron will increase

velocity of the electron will remain Unchanged

In direction of velocity of an electron is in the direction of field, then
$θ = 0^{\circ}$
Force, $F = q v B sin θ$
$(∵ sin 0^{\circ} = 0)$
$= 0$ Force is zero.
So, velocity of an electron will remain same.

Q. If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the

electron will turn to its right

electron will turn to its left

velocity of the electron will increase

velocity of the electron will remain Unchanged

In direction of velocity of an electron is in the direction of field, then θ=0∘ Force, F=qvBsinθ (∵sin0∘=0) =0 Force is zero. So, velocity of an electron will remain same.

In direction of velocity of an electron is in the direction of field, then
$θ = 0^{\circ}$
Force, $F = q v B sin θ$
$(∵ sin 0^{\circ} = 0)$
$= 0$ Force is zero.
So, velocity of an electron will remain same.