Other questions in this quiz

2. Three cells, EMF 6 V each, are connected in parallel. The total EMF is

  • 12 V
  • 18 V
  • 6 V
  • 9 V

3. When resistors are in parallel, the total resistance is

  • the same as the sum of each resistance
  • nothing is correct
  • less than the smallest resistance in the circuit
  • the same as the highest resistance

4. If two resistors are connected in series, the total resistance is 25 Ohms. If they are connected in parallel, it goes down to 6 Ohms. The possible values of the resistances in Ohms are

  • 30 and 30
  • 15 and 10
  • 60 and 15
  • 20 and 40

5. An earth wire is needed for an electrical equipment with

  • none is correct
  • metal casing
  • any casing
  • plastic casing

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