Category: Magnetism and Electromagnetism

A. low coercivity
B. high susceptibility
C. both of the above
D. none of the above

A. 2 x 1(T2 N/m)
B. 2 x KT3 N/m
C. 2 x 10″5 N/m
D. 2x 1(T7 N/m)

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. Kirchhoffs law
B. Lenz’s law
C. Ampere’s law
D. Faraday’s laws

A. KT3 and 1CT6
B. 1CT3 and 1CT7
C. KT4 and KT8
D. 10″2 and KT5

A. 2 AT
B. 4 AT
C. 6 AT
D. 10 AT

A. 8 N-m
B. 0.48 N-m
C. 0.048 N-m
D. 0.0048 N-m

A. slightly less than unity
B. equal to unity
C. slightly more than unity
D. equal to that ferromagnetic mate rials

A. the voltage across the two ends of exciting coil
B. the flow of an electric current
C. the sum of all currents embraced by one line of magnetic field
D. the passage of magnetic field through an exciting coil

A. the field of a set of parallel conductors
B. the field of a single conductor
C. the field in which all lines of magnetic flux are parallel and equidistant
D. none of the above