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Electrical Circuits and Electric Currents MCQ Questions and Answers 4 PDF Download eBook

Electrical circuits and electric currents Multiple Choice Questions and Answers (MCQs), electrical circuits and electric currents MCQs questions PDF to practice grade 7 science test 4 for online school programs. Practice "Current and Energy" MCQs, electrical circuits and electric currents quiz questions and answers for online teaching certification programs. Learn electrolysis, electrolytes, magnetic effect and electric current, simple circuits, electricity billing test prep for school certificate.

"Electrolysis is also used to purify" Multiple Choice Questions (MCQ) on electrical circuits and electric currents with choices copper, sodium, silver, and potassium for online teaching certification programs. Free science study guide for online learning current and energy quiz questions for online classes.

Electrical Circuits and Electric Currents MCQs Quiz 4 PDF Download eBook

MCQ: Electrolysis is also used to purify

  1. sodium
  2. copper
  3. silver
  4. potassium

B

MCQ: The electrolyte used in the purification of copper is

  1. copper nitrate
  2. copper chloride
  3. copper sulphate
  4. copper carbonate

C

MCQ: The strength of electromagnet can be increased by introducing a soft iron core

  1. outside the coil
  2. inside the coil
  3. round the coil
  4. above the coil

B

MCQ: For current to flow, the circuit should be

  1. parallel
  2. in series
  3. complete
  4. hot

C

MCQ: Electric companies charge for

  1. energy
  2. power
  3. resistance
  4. units

D