Back to quiz

6. How are stars created?

  • A magnetic field pulls dust, rock and gas together
  • Rocks crash into each other quickly
  • Rock expand because of the pressure in a vacuum
  • Gravitional attraction pulls dust, rock and gas together
  • Large stars split to form two smaller stars

7. Which is not a way potential difference in a generator can be increased?

  • Increasing the circumference of the coils
  • Increasing the speed of the magnet
  • Increasing the strength of the magnetic field
  • Increasing the number of turns on the coil

8. What is the core of a transformer made of?

  • Copper
  • Tin
  • Lead
  • Iron
  • Nickel

9. Which of these is the correct formula?

  • Distance = Force x Moment
  • Moment = Distance x Force
  • Force = Moment x Distance

10. A converging mirror will produce an inverted image.

  • True
  • False