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MCQ 101: Electroplating is used to coat less expensive metals with:

  1. gold
  2. silver
  3. platinum
  4. valuable metals

MCQ 102: Semiconductors are also found in:

  1. light emitting diodes
  2. liquid crystal displays
  3. cathode ray tubes
  4. cathode ray oscilloscopes

MCQ 103: Adding more bulbs to a circuit with one battery would:

  1. make them brighter
  2. make them sharper
  3. make them dimmer
  4. make them colorless

MCQ 104: Nichrome (mixture of nickel and chromium) resists:

  1. less electricity than copper
  2. less electricity than aluminum
  3. more electricity than copper
  4. more electricity than aluminum

MCQ 105: In parallel circuits, the voltage is:

  1. equal
  2. unequal
  3. more powerful
  4. less powerful

Electrical Circuits and Electric Currents MCQs App & e-Book – Class 7 Science Competitive Exam

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