Which of the following is not a unit of flux?
Which of the following is not a unit of flux?
A. Maxwell
B. Telsa
C. Weber
D. All of the above
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The initial permeability of an iron rod is________________?
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 stateA keeper is used to_____________?
A keeper is used to_____________?A. change the direction of magnetic lines
B. amplify flux
C. restore lost flux
D. provide a closed path for fluxA conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be______________?
A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be______________?A. zero
B. BLI
C. B2LI
D. BLI2Which of the following is a ferromagnetic material ?
Which of the following is a ferromagnetic material ?A. Tungsten
B. Aluminium
C. Copper
D. NickelThe left hand rule correlates to______________?
The left hand rule correlates to______________?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 conductorThe attraction capacity of electromagnet will increase if the_______________?
The attraction capacity of electromagnet will increase if the_______________?A. core length increases i
B. core area increases
C. flux density decreases
D. flux density increases