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State three ways in which the strength o...

State three ways in which the strength of an electromagnet can be increased.

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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. State whether the following statement is true or false : The magneti...

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  2. What is the shape of a current-carrying conductor whose magnetic field...

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  3. State three ways in which the strength of an electromagnet can be incr...

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  4. Fill in the following blanks which suitable words : (a) The lines of...

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  5. What is the other name of Maxwell's right-hand thumb rule ?

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  6. What for do we apply clock-rule?

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  7. State and explain the Clock face rule for determining the polarities ...

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  8. Name any two factors on which the strength of magnetic field produced ...

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  9. (a) Draw a circuit diagram to show how a soft iron piece can be transf...

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  10. (a) How does an electromagnet differ from a permanent magnet ? (b) N...

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  11. The strength of the magnetic field between the poles of an electromagn...

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  12. The diagram given below represents magnetic field caused by a current...

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  13. Choose the correct option: The magnetic field inside a long straight...

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  14. Which of the following correctly describes the magnetic field near a l...

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  15. The north-south polarities of an electromagnet can be found easily by ...

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  16. The direction of electric current in a solenoid when viewed from a par...

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  17. The direction of electric current in a solenoid when viewed from a par...

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  18. Which of the following is most suitable for the core of electromagnets...

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  19. Magnetic effect of current was discovered by

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  20. A soft iron bar is inserted inside a current-carrying solenoid. The ma...

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