Grade 7 English MCQs

Electrical Circuits and Electric Currents Multiple Choice Questions Test 53 Tests pdf Download

Practice science test 53 on electrical circuits and electric currents MCQs, grade 7 uses of electromagnets multiple choice questions and answers. Uses of electromagnets revision test has science worksheets, answer key with choices as heat and sound waves, light waves and heat, sound waves and heat energy of multiple choice questions (MCQ) with uses of electromagnets quiz as the loudspeaker change electric signals into for competitive exam prep. Free science study guide to learn uses of electromagnets quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents: Worksheets 53 Quiz pdf Download

MCQ. Loudspeaker change electric signals into

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

C

MCQ. Earth wire is a wire that

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

A

MCQ. Wire coil is wound round neck of a

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

A

MCQ. One of causes of overloading is

  1. long circuits
  2. short circuit
  3. overloaded cables
  4. under loaded voltage wires

B

MCQ. Sometimes, bulb does not light up even if circuit is complete because

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

A