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SQA National 5 Physics Area 3 Electricity overview quiz quiz

16questions. Pick an answer and you'll see why right away.

  1. What is electric current?

  2. What are the charge carriers in a metal wire?

  3. A current of 0.40 A flows for 50 s. What charge passes?

  4. In a series circuit, the current is:

  5. What does one volt mean?

  6. A 4.0 C charge gains 24 J of energy. What is the voltage?

  7. Which relationship is Ohm's law?

  8. A 9.0 V supply drives 1.5 A through a resistor. What is its resistance?

  9. Two resistors of 20 ohm and 30 ohm are in series. What is the total resistance?

  10. Two 12 ohm resistors are connected in parallel. What is the total resistance?

  11. How does the resistance of an LDR change as the light gets brighter?

  12. A potential divider has two equal resistors across a 12 V supply. The voltage across one is:

  13. Which relationship gives electrical power from current and voltage?

  14. An appliance operates at 230 V and draws 5.0 A. What is its power?

  15. A 100 W lamp is on for 60 s. How much energy does it use?

  16. A current of 2.0 A flows through a 15 ohm resistor. What power is dissipated?