Grade 7 English MCQs

Electrical Circuits and Electric Currents Multiple Choice Questions Test 21 Tests pdf Download

Practice science test 21 on electrical circuits and electric currents MCQs, grade 7 chemical effect of electric current multiple choice questions and answers. Chemical effect of electric current revision test has science worksheets, 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. Free science study guide to learn chemical effect of electric current quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents: Worksheets 21 Quiz pdf Download

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 only 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) resist

  1. less electricity than copper
  2. resists less electricity than aluminum
  3. resists more electricity than copper
  4. resists more electricity than non-metals

C

MCQ. In parallel circuits, voltage

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

A