Electric Energy Generation Utilization and Conservation Class 8 MCQ Electrical Engineering

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This Electric Energy Generation Utilization and Conservation Class 8 MCQ test contains random 30 Objective Questions. You have select one correct answer among given options.

Electric Energy Generation Utilization and Conservation Class 8 MCQ With Answers

1. What will happen to the potential energy of the magnets as the N and S get close?

  • increase
  • decrease
  • stay the same
  • there is none

2. What happens to the magnetic potential energy when the same poles are far apart?

  • increases
  • decreases
  • stays the same
  • All of above

3. If these two magnets with opposite poles are far apart, what happens to their potential energy?

  • increases
  • decreases
  • stays the same
  • None of these

4. What will happen to the magnetic potential energy of the magnets when the N and N get close?

  • increases
  • decreases
  • stays the same
  • None of these

5. Which of these magnet pairs has the MOST magnetic potential energy?

  • the N/S at the top because they are close
  • the S/S at the bottom because they are close
  • they both have the same amount
  • All of above

6. What is the electrical potential energy like when these same charges are far apart?

  • high
  • low
  • the same as when they are close

7. Which is an example of a single energy transformation?

  • A toaster converts electrical to thermal energy
  • A match converts mechanical to thermal to electromagnetic
  • A biker converts chemical to mechanical to thermal
  • A car converts chemical to thermal to mechanical

8. According to the Law of Conservation of Energy, when one form of energy is transformed into another, __________ energy is lost in the process

  • no
  • some
  • all
  • None of these

9. What is an example of multiple energy transformations?

  • Your body transforms chemical to thermal
  • Your body transforms chemical to mechanical
  • a flashlight converts chemical energy in batteries to electrical to electromagnetic energy in light
  • a phone converts electrical to electromagnetic

10. What is the electrical potential energy like when these same charges are far apart?

  • high
  • low
  • the same as when they are close

11. How are different forms of energy related?

  • they can all be transformed into other forms of energy
  • none of them can be transformed into other forms of energy
  • they can be created
  • they can be destroyed

12. What kind of energy in the sun transforms into electromagnetic energy?

  • nuclear
  • thermal
  • electric
  • chemical

13. What will happen to the potential energy of the magnets as the N and S get close?

  • increase
  • decrease
  • stay the same
  • there is none

14. A pendulum has the most kinetic energy when?

  • at the top of its swing
  • at the bottom of its swing

15. When these opposite charges get closer, what happens to their electrical potential energy?

  • increases
  • decreases
  • stays the same
  • All of above

16. Which of these magnet pairs has the MOST magnetic potential energy?

  • the N/S at the top because they are close
  • the S/S at the bottom because they are close
  • they both have the same amount
  • All of above

17. If you were to push these positive same charged particles together, do they have more or less electrical potential energy?

  • more
  • less
  • the same as far apart

18. A change from one form of energy to another

  • energy conservation
  • energy transformation
  • potential energy
  • kinetic energy

19. As an object falls its __________ energy decreases and its kinetic energy increases

  • potential
  • chemical
  • thermal
  • electric

20. These opposite charges are far apart. What happens to the electrical potential energy when opposite charges are far apart?

  • increases
  • decreases
  • stays the same

21. If these two magnets with opposite poles are far apart, what happens to their potential energy?

  • increases
  • decreases
  • stays the same
  • None of these

22. Whenever a moving object experiences friction, some of its kinetic energy is transformed into __________ energy.

  • thermal
  • electrical
  • nuclear
  • mechanical

23. What happens to the magnetic potential energy when the same poles are far apart?

  • increases
  • decreases
  • stays the same
  • All of above

24. What will happen to the magnetic potential energy of the magnets when the N and N get close?

  • increases
  • decreases
  • stays the same
  • None of these

25. If you were to push these positive same charged particles together, do they have more or less electrical potential energy?

  • more
  • less
  • the same as far apart

26. When these opposite charges get closer, what happens to their electrical potential energy?

  • increases
  • decreases
  • stays the same
  • All of above

27. _________ CANNOT be created or destroyed

  • energy
  • transformation
  • motion
  • pendulums

28. These opposite charges are far apart. What happens to the electrical potential energy when opposite charges are far apart?

  • increases
  • decreases
  • stays the same

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