An electron is moving along positive x-axis. A uniform electric field exists towards negative y-axis. What should be the direction of magnetic field of suitable magnitude so that net force on the electron is zero.

Positive z-axis

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Negative z-axis

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Positive x-axis

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Negative y-axis

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Negative z-axis
An electron is moving along positive x-axis. A uniform electric field exists towards negative y-axis. The direction of magnetic field of suitable magnitude so that net force on the electron is zero.
The direction of the magnetic force must be opposite to the direction of the electric force.
that is if the magnetic field is in the negative Z axis it will produce a force in the negative Y axis which opposes the force due to the electric field

Suggest Corrections

Similar questions

An electron is moving along positive x - axis. A uniform electric field exists towards negative y - axis. What should be the direction of magnetic field of suitable magnitude so that net force on electron is zero?

Q. An electron is moving along the positive x-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative x-axis. This can be done by applying the magnetic field along :

Q. An electron is moving with a uniform speed in the X - Y plane in a straight path along the negative X direction. If a uniform magnetic field is applied parallel along the positive z-axis, the electron will :

Q. A charged particle of charge

2 mC

has a velocity equal to

2 m/s

along the positive

x -

axis. If in the region, there exists a uniform magnetic field of

4 T

, directed along the negative

x -

axis. The magnitude of magnetic force on the charged particle is equal to

[

0.77 Mark

]

Join BYJU'S Learning Program