Electrical Circuits and Electric Currents Multiple Choice Questions 18 PDF Download

Practice electrical circuits and electric currents MCQs, grade 7 online science test 18, uses of electromagnets multiple choice questions and answers. Uses of electromagnets revision test has science worksheets, helping answer key with choices as microphones, loudspeakers, antennas and cathode tubes of multiple choice questions (MCQ) with uses of electromagnets quiz as radio, tv, cd player and sound system have for competitive exam prep, viva interview questions. Free science study guide to practice uses of electromagnets quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents Quiz PDF Download Worksheets 18

MCQ. Radio, TV, CD Player and sound system have

  1. loudspeakers
  2. microphones
  3. antennas
  4. cathode tubes

A

MCQ. A part of an electric circuit which is used to limit the amount of electric current flowing through the circuit is known as

  1. diode
  2. thermistor
  3. radiator
  4. resistor

A

MCQ. The slowing down of electrons depends upon

  1. material
  2. mass of conductor
  3. volume of conductor
  4. length of conductor

A

MCQ. When water is electrolyzed, the gas collected at cathode, is

  1. sulphur
  2. oxygen
  3. hydrogen
  4. sulphur dioxide

C

MCQ. For protection of electrical appliances

  1. resistors can be used
  2. fuses can be used
  3. thick wires can be used
  4. thin wires can be used

B