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प्रश्न
State the use of the principle of electromagnetic induction.
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उत्तर
It is used as a back-up for the lifts in tall buildings in case of electricity failure.
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संबंधित प्रश्न
State Lenz’s Law.
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?
A.C generator works on the principle of ____________.
Fleming’s left hand and Right hand rules are used in ____________.
The laws of induction were given 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?
What did the experiments of Michael Faraday and Joseph Henry around 1830 demonstrate?
If magnetic flux changes by \[\Delta\Phi_B\] in a time interval \[\Delta t\], which expression gives the induced emf \[e\]?
What does induction in an open circuit show about the cause of induced emf?
If the magnetic field across a loop decreases to zero, what is the final magnetic flux through the loop?
