6. The material with lowest resistivity is :
(a) constantan
(b) silver
(c) manganin
(d) nichrome
7. A ferrite core has less eddy current loss than an iron core because ferrites have :
(a) High resistance
(b) Low resistance
(c) Low permeability
(d) High hysteresis
8. Example of high resistivity material is :
(a) Nichrome
(b) Silver
(c) Gold
(d) Copper
9. Tick of the property, which is different from the group :
(a) Ductility
(b) Resistivity
(c) Tensile strength
(d) Hardness
10. Smaller resistors usually have …………. resistance value.
(a) small
(b) high
(c) low
(d) very small
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