A. R=qB/mV
B. R=mV/qB
C. R=qmV/B
D. R=qmB/V
Related Mcqs:
- 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 - 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 - 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 - A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B - An electron enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if_________________?
A. E = BeV
B. B = eE/V
C. E = BV
D. E = BeV/2 - A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?
A. πR
B. 2π R
C. 0
D. 4πR - Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?
A. πR
B. 2πR
C. 0
D. 4πR - 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 - If the plane of the rectangular coil is parallel to the magnetic field (i.e radial magnetic field) the torque on the coil is_____________________?
A. τ = NIAB cosφ
B. τ = NIAB sinφ
C. τ = NIAB tanφ
D. τ = NIAB - When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?
A. Vibratory motion
B. Linear motion
C. Rotatory motion
D. Angular motion
Advertisement