A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?

Related Mcqs:

1. When a particle of charge q and mass m enters into a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field it describes a circular path of radius___________________?

   A. R=qB/mV
   B. R=mV/qB
   C. R=qmV/B
   D. R=qmB/V

2. The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be__________________?

   A. a circle
   B. a spiral
   C. an ellipse
   D. helix

3. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?

   A. 4 rad. S-1
   B. 5 rad. S-1
   C. 1.6 rad. S-1
   D. 2.8 ms-1

4. When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?

   A. a straight line parallel to the field
   B. a parabola in a plane perpendicular to the field
   C. a circle in a plane perpendicular to the field
   D. a straight line along its initial direction

5. The projection of the particle moving in a circle with non-uniform speed executes ?

   A. S.H.M
   B. Vibratory motion
   C. Both B and D
   D. None S.H.M

6. A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?

   A. F=1/B
   B. F=1/Bsinθ
   C. F/0
   D. F=1/Bcosθ

7. Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?

   A. magnetic flux
   B. magnetic field intensity
   C. magnetic induction
   D. self inductance

8. When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?

   A. mV/r2
   B. mV/r
   C. mV2/r
   D. mV2/r2

9. An object travels at constant speed around a circle of radius 1.0 m in 2.0 seconds. What is the magnitude of its acceleration?

   A. 0
   B. π²
   C. 2 π²
   D. 4 π²

   Submitted by: Tauseef Ali

10. A particle having the mass of an electron and the charge of a proton is called a______________?

    A. Antiproton
    B. Positron
    C. Gamma rays
    D. Photon