Class VII

Electricity is formed by
  1. positively charged ions
  2. negatively charged ions
  3. electrons
  4. protons
Even best electrical conductor contains some
  1. Current
  2. non-metal
  3. resistance
  4. voltage
Shiny objects are often made by electroplating steel with
  1. nickel
  2. titanium
  3. chromium
  4. zinc
If two cells are connected in series, voltage will be
  1. halved
  2. doubled
  3. tripled
  4. quartered
Wire coil is suspended inside a
  1. temporary magnet
  2. steel bar
  3. permanent magnet
  4. copper cone
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