A. permanent magnets
B. transformers
C. non-magnetic substances
D. electromagnets
Related Mcqs:
- he retentivity (a property) of material is useful for the construction of__________?
A. permanent magnets
B. transformers
C. non-magnetic substances
D. electromagnets - The materials having low retentivity are suitable for making_____________?
A. weak magnets
B. temporary magnets
C. permanent magnets
D. none of the above - The Biot-savart’s law is a general modification of_______________?
A. Kirchhoffs law
B. Lenz’s law
C. Ampere’s law
D. Faraday’s laws - The unit of flux is the same as that of_______________?
A. reluctance
B. resistance
C. permeance
D. pole strength - Gilbert is a unit of_______________?
A. electromotive force
B. magnetomotive force
C. conductance
D. permittivity - Ferrites are a sub-group of_______________?
A. non-magnetic materials
B. ferro-magnetic materials
C. paramagnetic materials
D. ferri-magnetic materials - The commonly used material for shielding or screening magnetism is____________?
A. copper
B. aluminium
C. soft iron
D. brass - Which of the following is a ferromagnetic material ?
A. Tungsten
B. Aluminium
C. Copper
D. Nickel - Indicate which of the following material does not retain magnetism permanently
A. Soft iron
B. Stainless steel
C. Hardened steel
D. None of the above - A material which is slightly repelled by a magnetic field is known as_____________?
A. ferromagnetic material
B. diamagnetic material
C. paramagnetic material
D. conducting material
