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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 Faraday’s laws of electromagnetic induction.
In the following diagram an arrow shows the motion of the coil towards the bar magnet.
(1) State in which direction the current flows, A to B or B to A?
(2) Name the law used to come to the conclusion.
The direction of induced current is obtained by ______.
A D.C generator works on the principle of ____________.
The laws of induction were given by ______.
Define the right-hand thumb rule.
Express Faraday-Lenz's law of electromagnetic induction in an equation form.
A conductor in the form of a circular arc of the radius of curvature R subtends an angle Ø at its centre of curvature. If the current in the conduct is I, the magnetic induction at the centre of curvature is ______.
A circular loop is placed in a uniform magnetic field. The total number of magnetic field lines passing normally through the plane of the coil is called ______.
Explain how does the Lenz's law show the conservation of energy in the phenomenon of electromagnetic induction.
