Electrical Circuits and Electric Currents Multiple Choice Questions 39 PDF Download

Learn electrical circuits and electric currents MCQs, grade 7 online science test 39, electric motors multiple choice questions and answers. Electric motors revision test has science worksheets, helping answer key with choices as brushes, springs, mutators and receptors of multiple choice questions (MCQ) with electric motors quiz as in dc motor, coil between two carbon rods or other contacts to which electric current is fed, is called for competitive exam prep, viva interview questions. Free science study guide to practice electric motors quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents Quiz PDF Download Worksheets 39

MCQ. In DC motor, the coil between two carbon rods or other contacts to which electric current is fed, is called

  1. springs
  2. brushes
  3. mutators
  4. receptors

B

MCQ. The coil sits between the north and the south pole of the

  1. electromagnet
  2. permanent magnet
  3. temporary magnet
  4. mechanical magnet

B

MCQ. Most of the electric appliances get energy from

  1. cells
  2. batteries
  3. main supply
  4. dynamos

C

MCQ. Air and water can conduct electricity only, when they contain

  1. electrons
  2. protons
  3. ions
  4. photons

C

MCQ. Magnetic effect is present in

  1. track
  2. train
  3. track and train both
  4. wires above the train

C