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Electrical Circuits and Electric Currents MCQs – Practice Test 53 PDF Download

MCQ 261: The loudspeaker changes the electric signals into:

  1. light waves and heat
  2. heat and sound waves
  3. sound waves
  4. heat energy

MCQ 262: Earth wire is a wire that:

  1. is used to earth excess current
  2. insulates excess current
  3. diffuses excess current
  4. recharges voltage

MCQ 263: The wire coil is wound round the neck of a:

  1. paper cone
  2. magnet
  3. bass tube
  4. mechanical magnet

MCQ 264: One of the causes of overloading is:

  1. long circuit
  2. short circuit
  3. overloaded cables
  4. heavy circuit

MCQ 265: Sometimes, bulb does not light up even if the circuit is complete because the:

  1. energy is low
  2. power is low
  3. resistance is high
  4. electric charges are insufficient

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

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