What do we call the movement of electrons from the positive end to the negative end in an electric circuit?
  • Electrons
  • Protons
  • Conventional current
  • Electrolysis
Which of the following is a good conductor of electricity?
  • Wood
  • Copper
  • Rubber
  • Wool
Which of the following is an insulator?
  • Metals
  • Water
  • Human body
  • Rubber
Why metals are a good conductors of electricity?
  • They have free electrons present in their outermost orbits.
  • They have unstable nuclei.
  • They are lustrous.
  • None of these
Match the column
class8-chemical-effect-electric-current-1.png
  • (a)-> (i), (b) ->(ii), (c) ->(i) , (d) ->(i), e-> (i)
  • (a)-> (ii), (b) ->(i), (c) ->(i) , (d) ->(ii), e-> (i)
  • (a)-> (i), (b) ->(ii), (c) ->(i) , (d) ->(i), e-> (ii)
  • (a)-> (i), (b) ->(i), (c) ->(ii) , (d) ->(ii), e-> (ii)
The electric bulbs glow due to
  • Chemical effect of electric current
  • Magnetic effect of electric current
  • Heating effect of electric current
  • None of the above
Which of the following is an insulator
  • Paper
  • Human Body
  • tap water
  • Iron
Which device is used to measure electric current?
  • Voltmeter
  • Odometer
  • Ammeter
  • Galvanometer
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