Question

Which of the following statements is INCORRECT for the electrical conducting material, copper?
1. Its colour is reddish
2. It has low contact resistance.
3. It is highly malleable and ductile.
4. It has lowest resistance per unit weight.

Answer 1

Correct Answer - Option 4 : It has lowest resistance per unit weight.

Properties of Copper (electrical conducting material):

1. Excellent heat conductivity
2. Excellent electrical conductivity
3. Good corrosion resistance
4. Good biofouling resistance
5. Good machinability
6. Retention of mechanical and electrical properties at cryogenic temperatures
7. Non-magnetic
8. Reddish Brown color
9. Highly ductile and malleable 

 

Silver has the lowest resistance per unit weight.