Electromagnetism

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Across
  1. 3. conductor such as a wire wrapped together in the shape of a _______
  2. 5. The operating principle of a transformer based on electromagnetic __________.
  3. 7. The induced current is increased when:the speed ________ motion is increased
  4. 9. Two current-carrying conductors with currents in the same direction ______ each other.
  5. 10. Factors Affecting the Strength of an Electromagnet:Number of turns of __________
  6. 11. The coil connected to power supply whose voltage is to be raised or lowered is called ________ coil.
  7. 14. __________’s law states that an induced electric current always flows in such direction so as to oppose the change ( or motion) producing it.
  8. 15. The ________ grid is a network of electrical cables connecting electrical power stations to consumers of electricity
  9. 16. The induced current is increased when:a stronger_______ is used
  10. 19. Uses of Electromagnet:The Electromagnetic _________ Machine
  11. 20. Factors Affecting the Strength of an Electromagnet:shape of __________
  12. 21. Will lose ________ properties if the electric current is broken
  13. 22. The induced current is produced only there is a _______ motion.
Down
  1. 1. The production of an electric current by changing magnetic field is called electromagnetic ______________
  2. 2. Uses of Electromagnet:The Electric _______
  3. 4. When the coil rotates, It will cut across the magnetic field and ________ current flows in the coil.
  4. 6. To determine the Poles of a solenoid.Can be determined by ______ hand grip rule
  5. 8. The coil connected to the electrical equipment is called __________ coil.
  6. 12. When north pole move towards To P. P will become north pole to produce a force of __________
  7. 13. _________'s law :The magnitude of the induced electromotive force (e.m.f) is directly proportional to the rate of change of magnetic flux.
  8. 17. Transformers also play an important role in the __________ of electrical energy to the whole country.
  9. 18. ___________ is used to raise or lower the potential difference (voltage) of an alternating current.
  10. 23. _____ current can result in the loss of electrical energy in the foorm of heat.
  11. 24. When north pole move away from P. P will become south pole to Produce a force of __________