A. magnetic flux = flux density / area
B. magnetic flux = flux density x area
C. flux density = magnetic flux area
D. flux density = magnetic flux x area
Related Mcqs:
- SI unit of flux density is____________________?
A. NA-1m-1
B. NAm-1
C. NmA-1
D. NmA-2 - The standard vector symbol for flux density is ____________________?
A. M
B. L
C. H
D. B - A changing magnetic flux produces around itself an induced_______________?
A. Magnetic field
B. Electric field
C. Electromagnetic force
D. Artificial gravitational field - 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 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 - Very weak magnetic fields are detected by___________________?
A. Squids
B. Magnetic resonance imaging (MRI)
C. Magnetometer
D. Oscilloscope - 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 - Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________?
A. BINA cosa
B. BINA sina
C. BINA tana
D. BINA - A magnetic compass will be deflected if it is kept near a____________________?
A. charge in motion
B. charge at rest
C. both
D. none
