Electrical Circuits and Electric Currents Multiple Choice Questions 21 PDF Download

Practice electrical circuits and electric currents MCQs, grade 7 online science test 21, chemical effect of electric current multiple choice questions and answers. Chemical effect of electric current revision test has science worksheets, helping answer key with choices as silver, gold, platinum and valuable metals of multiple choice questions (MCQ) with chemical effect of electric current quiz as electroplating is used to coat less expensive metals with for competitive exam prep, viva interview questions. Free science study guide to practice chemical effect of electric current quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents Quiz PDF Download Worksheets 21

MCQ. Electroplating is used to coat less expensive metals with

  1. gold
  2. silver
  3. platinum
  4. valuable metals

D

MCQ. Semiconductors are also found in

  1. light emitting diodes
  2. liquid crystal displays
  3. cathode ray tubes
  4. cathode ray oscilloscopes

A

MCQ. Adding more bulbs to a circuit with one battery would

  1. make them brighter
  2. make them sharper
  3. make them dimmer
  4. make them colorless

C

MCQ. Nichrome (mixture of nickel and chromium) resists

  1. less electricity than copper
  2. less electricity than aluminum
  3. more electricity than copper
  4. more electricity than aluminum

C

MCQ. In parallel circuits, the voltage is

  1. equal
  2. unequal
  3. more powerful
  4. less powerful

A