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Questions and Answers
Which type of material has very low electrical conductivities and are classified as being electrical insulators?
Which type of material has very low electrical conductivities and are classified as being electrical insulators?
- Polymers and ceramics (correct)
- Paramagnetic materials
- Diamagnetic materials
- Ferromagnetic materials
What are the metals in common use in engineering which have the highest electrical conductivities?
What are the metals in common use in engineering which have the highest electrical conductivities?
- Gold, iron, and lead
- Nickel, zinc, and tin
- Silver, copper, and aluminum (correct)
- Platinum, mercury, and titanium
What is the unit of electrical conductivity?
What is the unit of electrical conductivity?
- Ω-1 m-1
- mho (℧)
- siemen (S)
- S/m (correct)
What is the reciprocal of the resistance of a material called?
What is the reciprocal of the resistance of a material called?
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