Physics

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Across
  1. 3. The most suitable material for making the core of an electromagnet
  2. 5. ____poles do not exist
  3. 6. magnetic field lines in the middle of the current carrying solenoid are
  4. 9. ___finger indicates current
Down
  1. 1. ___discovered magnetic effects of current
  2. 2. the direction of current in the coil at one end of an electromagent is clockwise. this end of the electromagnet will be
  3. 4. magnetic field lines leave the _____pole
  4. 7. fleming's rule for the motor effect uses___hand
  5. 8. a motor contains a kind of switch called___