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A straight wire of mass 200 g and length...

A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. it is suspended in mid air by a uniform horizontal magnetic field B. The magnitude of B (in tesla) is

A

2

B

1.5

C

0.55

D

0.65

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MODERN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE
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  2. When a charged particle moves perpendicular to a magnetic field, then

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  3. A straight wire of mass 200 g and length 1.5 m carries a current of 2 ...

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  4. The magnetic field at a distance r from a long wire carryimg current I...

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  7. At the time of short circuit,the current in the circuit.

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  8. State whether the following statements are true or false: An electric ...

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  10. True or false AC is more dangerous as compared to DC.

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  11. True or false AC is the best suitable for electroplating.

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  12. True or false The function of a fuse wire depends on its length.

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  13. Fill ups Electromagnetic induction is the phenomenon of converting…………...

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  14. Fill ups Fleming's left hand rule enables us to find the direction of ...

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  15. Fill ups ……………..cannot be used for electroplating.

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  16. Fill ups Live wire has …………….coloured insulation.

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  17. Fill ups Short circuiting occurs when live and………………wires come in cont...

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  18. When does an electric short circuit occur?

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  19. Which sources produce alternating current?

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  20. What is the principle of working of an A.c generator?

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