conductors non conductors electricity solids

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Easy to shape materials like ceramics are used as

Easy to shape materials like ceramics are used as
  • A. conductors
  • B. insulators
  • C. electrodes
  • D. catalysts
  • Correct Answer: Option B

Graphite is a conductor of electricity because

Graphite is a conductor of electricity because
  • A. it has valence electrons
  • B. it is a non-metal form of Carbon
  • C. it is an allotrope of Carbon
  • D. Both A and B
  • Correct Answer: Option D

Overhead cables are insulated from pylons through

Overhead cables are insulated from pylons through
  • A. plastic
  • B. ceramics and glass
  • C. rubber
  • D. PVC
  • Correct Answer: Option B

Examples of non-conductors include

Examples of non-conductors include
  • A. sulphur
  • B. phosphorus
  • C. wood
  • D. all of these
  • Correct Answer: Option D

Aluminum (Al) is preferred in overhead power cables because

Aluminum (Al) is preferred in overhead power cables because
  • A. it is a good conductor
  • B. it acts as an insulator, in case of lightening
  • C. it prevents accidents
  • D. it is lighter in weight
  • Correct Answer: Option D