Back to quiz

6. An ammeter is always connected ...

  • ... to a power supply
  • ... in series with components
  • ... in parallel to components

7. A diode...

  • ...changes resistance if the light level changes
  • ...only lets current through in one direction
  • ...lights up

8. Current...

  • ... travels from positive to negative
  • ... travels in the same way as the electrons
  • ... is measured in volts

9. Voltage is a measure of...

  • ...the total energy in a circuit
  • ...the difference in energy between two points in a circuit
  • ...the difference in current between two points

10. A diode...

  • ...needs a small voltage across it before it will conduct current
  • ...changes resistance depending on temperature
  • ...has a current-voltage graph which is symmetrical