A. current, induced e.m.f. and direction of force on a conductor
B. magnetic field, electric field and direction of force on a conductor
C. self induction, mutual induction and direction of force on a conductor
D. current, magnetic field and direction of force on a conductor
Related Mcqs:
- In the left hand rule, forefinger always represents______________?
A. voltage
B. current
C. magnetic field
D. direction of force on the conductor - Fleming’s left hand rule is used to find_________________?
A. direction of magnetic field due to current carrying conductor
B. direction of flux in a solenoid
C. direction of force on a current carrying conductor in a magnetic field
D. polarity of a magnetic pole - The initial permeability of an iron rod is________________?
A. the highest permeability of the iron rod
B. the lowest permeability of the iron rod
C. the permeability at the end of the iron rod
D. the permeability almost in non-magnetised state - Which of the following materials are diamagnetic ?
A. Silver
B. Copper
C. Silver and copper
D. Iron - The Biot-savart’s law is a general modification of_______________?
A. Kirchhoffs law
B. Lenz’s law
C. Ampere’s law
D. Faraday’s laws - Susceptibility is positive for______________?
A. non-magnetic substances
B. diamagnetic substances
C. ferromagnetic substances
D. none of the above - A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be____________?
A. 240 N
B. 24 N
C. 2.4 N
D. 0.24 N - The main constituent of permalloy is_____________?
A. cobalt
B. chromium
C. nickel
D. tungsten - Which of the following is a vector quantity ?
A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential - The direction of magnetic lines of force is________________?
A. from south pole to north pole
B. from north pole to south pole
C. from one end of the magnet to another
D. none of the above
