Home
Class 12
PHYSICS
An electron gun with its collector at a ...

An electron gun with its collector at a potential of 100 V fires out electrons in a spherical bulb containing hydrogen gas at low pressure `(~10^-2 mm of Hg)`. A magnetic field of `2.83 xx 10^-4 T` curves the path of the electrons in a circular orbit of radius 12 cm. detremine e/m from the data.

Promotional Banner

Similar Questions

Explore conceptually related problems

Find the flux density of the magnetic field to cause 62.5 eV electron to move in a circular path of radius 5 cm. Given m = 9.1 xx 10^-31 kg, e = 1.6 xx 10^-19 C

In Bohr's model of hydrogen atom, the electron moves around the nucleus in a circular orbit of radius 5xx10^-11 m. Its time period is 1.5 xx 10^-16 s. The current associated with the electron motion is

Calculate the torque on a 50 turn circular coil of radius 10 cm, when placed with its plane at 60^@ with a magnetic field of 3.1 xx 10^-5 T . The current through the coil is 2 A.

An a.c. generator consists of a coil of 2,000 turns each of area 80 cm^2 and rotating at an angular speed of 200 r.p.m. in a uniform magnetic field of 4.8 xx 10^-2 T. Calculate the peak and r.m.s. value of e.m.f induced in the coil.

Find the flux density of the magnetic field to cause 62.5eV electron to move in a circular path of the radius 5cm. Given m = 9.1xx10^(-31) ,kg, e = 1.6xx10^(-19)C

Calculate the strength of magnetic field due to an electron revolving in a circle of radius 2xx10^-10 m with a speed of 5xx10^6 ms^-1 at its centre.

Calculate the current in a circular coil of radius 5 cm and 100 turns to produce a field of 2 xx 10^-5 T at its centre.

A monoenergtic electron beam with electron speed of 5.20 xx 10^6 ms^-1 is subjected to a magnetic field of 1.30 xx 10^-4 t normal to beam velocity. What is the radius of the circle traced by the beam, given e/m for electron equals 1.76 xx 10^11 kg^-1 ?

An electron having charge 1.6xx10^(-19)C and mass 9xx10^(-31) kg is moving with 4xx10^(6)ms^(-1) speed in a magnetic field 2xx10^(-1) tesla in circular orbit. The force acting on an electron and the radius of circular orbit will be: