Which of the following is the poorest conductor of electricity ?

Related Mcqs:

1. Which of the following materials is the best conductor of electricity ?

   A. Tungsten B. Aluminium C. Copper D. Carbon...

2. Which of the following is an advantage of stranded conductor over equivalent single conductor ?

   A. Less liability to kink B. Greater flexibility C. Less liability to break D. All of the above...

3. Which of the following are non-conductors of electricity?

   A. Non-metal solids except carbon B. Air and most other gases C. Pure water and liquids in general except mercury D. All of the above...

4. The conduction of electricity, in semiconductors, takes place due to movement of______________?

   A. positive ions only B. negative ions only C. positive and negative ions D. electrons and holes...

5. In conductors conduction of electricity takes place due to movement of_______________?

   A. electrons only B. positive ions only C. negative ions only D. positive and negative ions E. none of the above...

6. A perfect conductor has_____________?

   A. zero conductivity B. unity conductivity C. infinite conductivity D. none of the above...

7. The conductivity of a conductor can be increased by_______________?

   A. decreasing its temperature B. increasing its temperature C. decreasing its vibration D. increasing its vibration...

8. The structure sensitive property of a super conductor is______________?

   A. critical magnetic field B. transition temperature C. critical current density D. none of the above...

9. If the resistance of a conductor does not vary in accordance with Ohm’s law it is known as____________?

   A. non-linear conductor B. reverse conductor C. bad-conductor D. non-conductor...

10. Due to which of the following reasons copper and aluminium are not used for heating elements ?

    A. Both have great tendency for oxidation B. Both have low melting point C. Very large length of wires will be required D. All of the above...