MCQs on Conductor and Conductance

MCQs on Conductor and Conductance

1. The unit of conductance cannot be expressed in

1. mho
2. (ohm)^-1
3. siemens
4. ohm/m

Answer: (d)

2. The SI unit of specific resistance is

1. ohm m
2. ohm/m
3. ohm/m2
4. (ohm)-1

Answer: (a)

3. The reciprocal of resistivity of a conductor is

1. conductance
2. capacitance
3. conductivity
4. none of these

Answer: (c)

4. In order to measure current in a resistance present in a circuit, the ammeter is connected

1. in series
2. in parallel
3. in series or parallel
4. nothing can be decided

Answer: (a)

5. Good conductors have many loosely bound

1. atoms
2. protons
3. molecules
4. electrons

Answer: (d)

6. The reciprocal of electrical resistance is

1. voltage
2. current
3. conductance
4. none of the above

Answer: (c)

7. The element with the highest conductivity is

1. gold
2. silver
3. copper
4. platinum

Answer: (b)

8. As temperature increases electrolytic conduction

1. increases
2. decreases
3. remains unaffected
4. none of the above

Answer: (a)

9. The resistance of a conductor varies inversely as

1. length
2. area of cross-section
3. temperature
4. Resistivity

Answer: (b)

10. With a rise in temperature, the resistance of semiconductors

1. decreases
2. increases
3. first, increase and then decrease
4. remains constant

Answer: (a)