Mains Electricity and Electronics

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1. Α positively charged rod is brought near to a negatively charged electroscope and is then removed without touching it. What happens to the leaf of the electroscope?

  • rises more and stays at that deflection
  • rises more and then returns to its previous deflection
  • falls and returns to its previous deflection
  • falls and stays at that deflectiom
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Other questions in this quiz

2. Circle one of the following statements that is false for a parallel circuit.

  • Α complete circuit is needed for current to flow.
  • The pd. across each component is less than the total p.d. across the supply.
  • The current from the source equals the sum of the currents in each branch.
  • The pd. across each component is less than the total p.d. across the supply.

3. Suggest one checks you could make to reduce the risk of receiving an electric shock from an old electrical appliance.

  • Pull the Wire apart
  • Wear Rubber Gloves
  • Hit the wire
  • Lick your fingures

4. Circle one of the following statements that is false for a series circuit.

  • The current at every point is the same.
  • The sum of the p.d.s across each component equals the total pd. across the supply.
  • The combined resistance of resistors is less than the sum of the individual resistors.
  • Α complete circuit is needed for current to flow.

5. Circle one of the following statements that is false for a parallel circuit.

  • The pd. across each component is less than the total p.d. across the supply.
  • The current from the source equals the sum of the currents in each branch.
  • The pd. across each component is less than the total p.d. across the supply.
  • Α complete circuit is needed for current to flow.

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