Ammeter can be connected

  • before the cell or battery
  • before the bulb
  • after the bulb
  • anywhere

Shiny objects are often made by electroplating steel with

  • nickel
  • titanium
  • chromium
  • zinc

A good permanent magnet should produce a high magnetic field with a

  • high mass
  • low mass
  • dense mass
  • thick mass

The discovery which was made by Hans Oersted was used by an

  • British scientist
  • French scientist
  • English scientist
  • Chinese scientist

Steel cans are made of

  • lead
  • tinplate
  • tungsten
  • cobalt

The pure piece of metal which is used to be plated, is made the

  • anode
  • cathode
  • nematode
  • posit rode

To make the coil keep rotating, the current is reversed after every half turn by a device called

  • brush
  • commutator
  • mutator
  • carbon spring

The charge flowing in the wire when we turn the light on, is

  • positive ions
  • negative ions
  • electrons
  • protons

Miniature circuit breaker is a small

  • fuse
  • magnetic switch
  • electromagnetic switch
  • two way switch
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