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 conductor

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. Bli2

The use of permanent magnets is. not made in_____________?

A. Magnetoes
B. Energy meters
C. Transformers
D. Loud-speakers

Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of_________________?

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)

The main constituent of permalloy is_____________?

A. Cobalt
B. Chromium
C. Nickel
D. Tungsten

Paramagnetic materials have relative permeability________________?

A. Slightly less than unity
B. Equal to unity
C. Slightly more than unity
D. Equal to that ferromagnetic mate rials

Gilbert is a unit of_______________?

A. Electromotive force
B. Magnetomotive force
C. Conductance
D. Permittivity

Substances which have permeability less than the permeability of free space are known as_____________?

A. Ferromagnetic
B. Paramagnetic
C. Diamagnetic
D. Bipolar

In the left hand rule, forefinger always represents______________?

A. Voltage
B. Current
C. Magnetic field
D. Direction of force on the conductor

Ferrites are a sub-group of_______________?

A. Non-magnetic materials
B. Ferro-magnetic materials
C. Paramagnetic materials
D. Ferri-magnetic materials