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What are the two possible causes of exce...

What are the two possible causes of excessive heating of electric wires ?

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Overloading and short circuiting cause excessive heating of electric wires.
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ZEN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT -Additional question section (Very-short-answer [vsa] type questions)
  1. What is the difference between the wires used in the element of an ele...

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  2. Electricians wear rubber shoes or rubber hand gloves while working . W...

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  3. What are the two possible causes of excessive heating of electric wire...

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  4. What happens if a 5 A fuse is connected to a wire carrying 15 A curren...

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  5. What is the colour of live wire ?

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  6. A current flows through a horizontal power line from east to west. Wha...

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  7. What is meant by magnetic field ?

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  8. What are magnetic field lines ? How is the direction of a magnetic fie...

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  9. Name an instrument, in which the directive property of a magnet is use...

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  10. Identify the poles of the magnet in the given Figures.

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  11. What is the basic cause of an induced emf ?

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  12. Does an induced emf develop in a conductor when moved in a direction p...

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  13. State the conclusion from the observation that a current-carrying wire...

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  14. What is magnetic effect of current ?

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  15. Why are magnetic field lines closed curves ?

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  16. What happens if a bar magnet is cut into twopieces i] perpendicular...

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  17. What does the divergence of magnetic field lines near the end of a cur...

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  18. How can a sloenoid be used to magnetise a steel bar ?

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  19. In a solenoid, the current through each circular loop flows in the sam...

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  20. Name the rule which gives the direction of induced current in a conduc...

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