Calculate the speed of an electron if it travels in a circular path of – McqOptions

MCQOPTIONS

1.	Calculate the speed of an electron if it travels in a circular path of radius 50 cm in a magnetic field of 5 10-3 T.
A.	440 10<sup>7</sup> m/s
B.	4 10<sup>7</sup> m/s
C.	44 10<sup>7</sup> m/s
D.	0.4 10<sup>7</sup> m/s
Answer» D. 0.4 10<sup>7</sup> m/s

Discussion

No Comment Found

Related MCQs

In a cyclotron, a magnetic induction of 1.4 T is used to accelerate protons. How rapidly should the electric field between the dees be reversed?
What should be the minimum magnitude of the magnetic field that must be produced at the equator of earth so that a proton may go round the earth with a speed of 1 107 ms-1? Earth s radius is 6.4 106 m.
Alpha particles of mass 6.68 10-27 Kg and charge 3.2 10-19 C is accelerated in a cyclotron in which a magnetic field of 1.25 T is applied perpendicular to the dees. How rapidly should the electric field between the dees be reversed?
The frequency of revolution of a charged particle in a cyclotron does not depend on X . Identify X.
Electrons are accelerated in a cyclotron.
A cyclotron has an oscillatory frequency of 12 MHz and a dee radius of 50 cm. Calculate the magnetic field required to accelerate deuterons of mass 3.3 10-27 Kg and charge 1.6 10-19 C.
If an electron entering at a magnetic field of 2 10-2 T has a velocity of 3 107 ms-1 and describes a circle of radius 8 10-3 m, then find the value of ( frac {e}{m} ) of the electron.
Which of the following particles cannot be accelerated using a cyclotron?
A chamber is maintained at a uniform magnetic field of 5 10-3 T. An electron with a speed of 5 107 ms-1 enters the chamber in a direction normal to the field. Calculate the radius of the path.
Calculate the speed of an electron if it travels in a circular path of radius 50 cm in a magnetic field of 5 10-3 T.