Other questions in this quiz

2. Why don't appliances with plastic cases have to be earthed?

  • Plastic is a good conductor so cannot become live
  • Plastic is an insulator so cannot become live
  • Plastic does need to be earthed
  • PLASTIC IS TOO SASSY AND COOL FOR DAT

3. Why must appliances with metal cases be earthed?

  • Appliances with metal cases don't need to be earthed
  • So that the case cannot become live and electrocute you
  • SO YOU DON'T GET ZAPPED BY OLD SPARKY
  • So that the appliance does not short circuit

4. How do you calculate the frequency of an ac supply?

  • f=T/1
  • f=1/T
  • FREQUENCY=RAPERxPASTORAL CARE
  • LOOOOOLLLLLLLLLLLL YOU DON'T KNOW
  • f=Tx100

5. What is direct current?

  • LOL WHO CARES
  • Current that passes in one direction only
  • Current that changes direction
  • a current that goes directly from the power source

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