Electrical Circuits and Electric Currents Multiple Choice Questions 42 PDF Download

Practice electrical circuits and electric currents MCQs, grade 7 online science test 42, electrolytes multiple choice questions and answers. Electrolytes revision test has science worksheets, helping answer key with choices as sulphuric acid, hydrochloric acid, nitric acid and carbonic acid of multiple choice questions (MCQ) with electrolytes quiz as water is a poor electrolyte, so an acid is added to increase its conductivity. acid is for competitive exam prep, viva interview questions. Free science study guide to practice electrolytes quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents Quiz PDF Download Worksheets 42

MCQ. Water is a poor electrolyte, so an acid is added to increase its conductivity. The acid is

  1. hydrochloric acid
  2. sulphuric acid
  3. nitric acid
  4. carbonic acid

B

MCQ. A thin wire in the bulb made up of tungsten is known as

  1. cable
  2. terminal
  3. tungsten wire
  4. filament

D

MCQ. Many main supply system uses

  1. 1 wire
  2. 2 wires
  3. 3 wires
  4. 5 wires

C

MCQ. The name of the scientist who discovered relationship between electricity and magnetism was

  1. Robert Hooke
  2. Nelson Green
  3. George Pascal
  4. Hans Oersted

D

MCQ. If a '3kW' electric fire is used for 4 hours, the consumed units will be equal to

  1. 0.75
  2. 12
  3. 10
  4. 8

B