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Name the current -carrying conductor ,...

Name the current -carrying conductor , whose magnetic field is represented by the following diagram .

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A circular coil .
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Name the devices which a current carrying conductor and magnetic field are used .

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What are the factors on which the force acting on a give current - carrying conductor placed in a magnetic field depend ? State when is the magnitude of force highest .

Give expression for the force of a current carrying conductor in a magnetic field.

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State the rule to determine the direction of a (i) magnetic field produced around a straight cocnductor - carrying current, (ii) force experienced by a current - carrying straight conductor placed in a magnetic field which is perpendicular to it , and (iii) current induced in a coil due to its rotation in a magnetic field .

PQ is a current - carrying long straight conductor in the plane of the paper as shown in the following figure . A and B are two points at distance r_(1) and r_(2) from it . Mention the direction of the magnetic field produced by it at point A and B .

PQ is a current - carrying long straight conductor in the plance of the paper as shown in the following figure. A and B are two points at distances r_(1) and r_(2) from it . If r_(2) gt r_(2) at which point will the strength of the magnetic field be greater ? Justify your answer .

When is the force experienced by a current - carrying conductor placed in a magnetic field largest ?

As shown in the following figure , the magnetic force is acting in the downward direction on the current - carrying wire placed in the magnetic field . What is the direction of the magnetic field ?

KUMAR PRAKASHAN-MAGNETIC EFFECTS OF ELECTRIC CURRENT -ANSWER THE FOLLOWING QUESTIONS IN VERY SHORT AS DIRECTED (MISCELLANEOUS):
  1. How does the current in a domestic circuit differ from that used to...

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  2. State what would happen to the direction of rotation of the cell curr...

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  3. State the use of Maxwell.s corckscrew rule .

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  4. What type of dynamo (a machine for changing other power into electric...

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  5. Give one reason for not using a series arrangement for domestic circ...

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  6. What does the following symbol indicate/represent?

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  7. What is the function of the brushes in an AC generator ?

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  8. What determined the frequency of AC produced by a generator ?

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  9. What is the role of each of the three pins in a power plug ?

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  10. State two serious hazards of electricity .

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  11. Name an instrument used in navigation.

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  12. What is the effect the resistance in the circuit at the time of short...

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  13. Name the current -carrying conductor , whose magnetic field is re...

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  14. What is a commutator ?

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  15. In an electric motor , which of the following remains fixed and w...

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  16. What change should be made in an AC generator , so that it may becom...

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  17. If fuses of 250 mA, 5A and 10 A were available , which one would be...

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  18. What is a galvanometer ?

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  19. What are the two most commonly used domestic circuits ?

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  20. What do you mean by earthing ?

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