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प्रश्न
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
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उत्तर
When a coil has a large number of turns, then magnitude of induced e.m.f. in the coil become more and then by Lenz's law it will oppose more.
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संबंधित प्रश्न
- Describe briefly one way producing an induced e.m.f?
- State one factor that determines the magnitude of induced e.m.f. in part (a) above.
- What factor determines the direction of induced e.m.f. in part (a) above?
The diagram in shows a coil of several turns of copper wire near a magnet NS. The coil is moved in the direction of arrow shown in the diagram.
- In what direction does the induced current flow in the coil?
- Name the law used to arrive at the conclusion in part (i).
- How would the current in coil be altered if
- the coil has twice the number of turns,
- the coil was made to move three times fast?
The direction of the magnetic field around a straight conductor carrying current can be determined by ______.
For which angle between two equal vectors `vec"A"` and `vec"B"` will the magnitude of the sum of two vectors be equal to the magnitude of each vector?
Name the principle of AC generator.
What changes when either a coil or a nearby magnet is moved so that their relative position changes?
Which condition is a limitation of Faraday’s First Law or Neumann’s law?
What interaction opposes a north pole moving towards the near face of a coil?
What interaction opposes a north pole moving away from the near face of a coil?
If the magnetic field across a loop decreases to zero, what is the final magnetic flux through the loop?
