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प्रश्न
What is Lenz’s law?
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उत्तर
Lenz's law states that the direction of induced e.m.f. (or induced current) is such that it always tends to oppose the cause which produces it.
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संबंधित प्रश्न
- How would you demonstrate that a momentary current can be obtained by the suitable use of a magnet, a coil of wire and a galvanometer?
- What is the source of energy associated with the current obtained in part (a)?
A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor.
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
The instantaneous magnetic flux in a circuit is `phi=4t^2-4t+1`. The total resistance of circuit is 15 Ω. At t = 2s, the induced current in circuit is ____________.
A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference.
Fleming’s left hand and Right hand rules are used in ____________.
A vertical electric field of magnitude 4.9 × 105 N/C just prevents a water droplet of a mass 0.1 g from falling. The value of charge on the droplet will be: (Given g = 9.8 m/s2).
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.
Explain how does the Lenz's law show the conservation of energy in the phenomenon of electromagnetic induction.
