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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)

  1. The SI unit of specific resistance is
  1. ohm m
  2. ohm/m
  3. ohm/m2
  4. (ohm)-1

Answer: (a)

  1. The reciprocal of resistivity of a conductor is
  1. conductance
  2. capacitance
  3. conductivity
  4. none of these

Answer: (c)

  1. 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)

  1. Good conductors have many loosely bound
  1. atoms
  2. protons
  3. molecules
  4. electrons

Answer: (d)

  1. The reciprocal of electrical resistance is
  1. voltage
  2. current
  3. conductance
  4. none of the above

Answer: (c)

  1. The element with the highest conductivity is
  1. gold
  2. silver
  3. copper
  4. platinum

Answer: (b)

  1. As temperature increases electrolytic conduction
  1. increases
  2. decreases
  3. remains unaffected
  4. none of the above

Answer: (a)

  1. The resistance of a conductor varies inversely as
  1. length
  2. area of cross-section
  3. temperature
  4. Resistivity

Answer: (b)

  1. With a rise in temperature, the resistance of semiconductors
  1. decreases
  2. increases
  3. first, increase and then decrease
  4. remains constant

Answer: (a)

 

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