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A current flows downwards in a wire that...

A current flows downwards in a wire that passes vertically through a table top. Will the magnetic field lines around it go clockwise or anticlockwise when viewed from above the table ?

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(a) S-pole (b) N-pole (c ) Clock-face rule
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. A current-carrying straight wire is held in exactly vertical position....

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  2. For the coil in the diagram below, when the switch is pressed : (a) ...

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  3. A current flows downwards in a wire that passes vertically through a t...

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  4. The directions of current following in the coil of an electromagnet at...

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  5. A current-carrying conductor is held in exactly vertical direction. In...

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  6. A thick wire is hanging from a wooden table. An anitclockwise magnetic...

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  7. What produces magnetism in the human body ?

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  8. What is the full form of MRI ?

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  9. When is the force experienced by a current-carrying conductor placed i...

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  10. When is the force experienced by a current-carrying conductor placed i...

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  11. In a statement of Feming's left-hand rule, what do the following repr...

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  12. Name one device which works on the magnetic effect of current.

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  13. Name the device which converts electrical energy into mechanical energ...

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  14. A motor converts one form of energy into another. Name the two forms.

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  15. State whether the following statement is true or false : An electric...

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  16. For Fleming's left-hand rule, write down the three things that are 90^...

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  17. What is the other name of the split ring used in an electric motor ?

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  18. Of what substance are the brushes of an electric motor made ?

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  19. In an electric motor, which of the following remains fixed and which r...

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  20. What is the role of the split-ring in an electric motor?

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