Category: Magnetism and Electromagnetism

A. 2
B. 4
C. 6
D. 8

A. field strength
B. inductance
C. flux density
D. flux

A. decreases with increasing cross sectional area of material
B. increases with increasing cross-sec-tional area of material
C. does not vary with increasing cross-sectional area of material
D. any of the above

A. proportional to 7
B. proportional to X
C. proportional to distance between the conductors
D. inversely proportional to I

A. permanent magnets
B. transformers
C. non-magnetic substances
D. electromagnets

A. resistance of the coil
B. motion of the magnet
C. number of turns of the coil
D. pole strength of the magnet

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. iron
B. copper
C. aluminium
D. moving charges

A. M
B. M/2
C. 2 M
D. M/4

A. pole strength
B. universal constant
C. scalar quantity
D. vector quantity