Mains Electricity and Electronics

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1. 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.
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Other questions in this quiz

2. 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
  • falls and returns to its previous deflection
  • falls and stays at that deflectiom
  • rises more and then returns to its previous deflection

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

  • Α complete circuit is needed for current to flow.
  • 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.
  • The pd. across each component is less than the total p.d. across the supply.

4. A potential difference of 20V is required for a current of 0.5A to flow through a resistor, What is the resistor?

  • 80 oms
  • 20 olms
  • 40 olms
  • 35 olms`

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

  • The current from the source equals the sum of the currents in each branch.
  • 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 pd. across each component is less than the total p.d. across the supply.

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