Home
Class 12
PHYSICS
A beam of electrons passes through cross...

A beam of electrons passes through crossed electric and magnetic fields `E = 7.2 xx 10^6 NC^-1` and `B = 2.4 T`. If the beam goes undeviated, the velocity of electrons is

A

`7.2 xx 2.4 xx 10^6 ms^-1`

B

`3.0 xx 10^6 ms^-1`

C

`2.0 xx 10^6 ms^-1`

D

none of the above.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A beam of alpha -particles passes undeflected through crossed electric and magnetic fields with E = 6.6 xx 10^6 Nc^-1 and B = 1.2 tesla. The speed of alpha -particles is

A monoenergetic electron beam with electron speed of 5.20xx10^(6) ms^(-1) is subject to a magnetic field of 1.30xx10^(-4)T normal to the beam velocity. What is the radius of the circle traced by the beam? Given e//m = 1.76 xx 10^(11) kg^(-1) .

A charged particle with a velocity 2 xx 10^(3) m s^(-1) passes undeflected through electric field and magnetic fields in the mutually perpendicular directions. The magnetic field is 1.5 T. The magnitude of electric field will be

A charged particle with a velocity 2 xx 10^3 ms^-1 passes undeflected through electric field and magnetic fields in mutually perpendicular directions. The magnetic field is 1.5 T. The magnitude of electric field will be

Write the relation between the magnitude of electric and magnetic fields in an electromagnetic wave with speed of light and hence find the magnitude of the electric field at a point in space and time if the magnetic field at that place is 2 xx 10^(-8) T .

A current of 2 A is passing through a metal wire of cross sectional area 2 xx 10^(-6) m^(-2) . If the number density of free electrons in the wire is 5 xx 10^(26) m^(-3) , the drift speed of electrons is (given e = 1.6 xx 10^(-19) C)