Magnetism and Electromagnetism

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

A. it corrodes easily
B. it has high permeability
C. it has high specific gravity
D. it has low permeability

A. the magnetic lines of force will bend away from their usual paths in order to go away from the piece
B. the magnetic lines of force will bend away from their usual paths in order to pass through the piece
C. the magnetic field will not be affected
D. the iron piece will break

A. flux density
B. susceptibility
C. relative permeability
D. none of the above

A. large area oiB-H loop
B. high permeability and low hysteresis loss
C. high co-ercivity and high retentivity
D. high co-ercivity and low density

A. henry/metre
B. henry
C. henry/sq. m
D. it is dimensionless

A. Soft iron
B. Stainless steel
C. Hardened steel
D. None of the above

A. radius of conductors
B. current in one conductor
C. product of current in two conductors
D. distance between the conductors

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

A. zero
B. BLI
C. B2LI
D. BLI2