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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?
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
State Lenz's Law.
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.
A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor.
In a coil of resistance 150 `Omega`, a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is ____________.
Define Fleming’s Left Hand Rule.
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 ______.
Name the principle of AC generator.
State the use of the principle of electromagnetic induction.
State two factors on which the magnitude of induced e.m.f. in a coil depend.
Explain how does the Lenz's law show the conservation of energy in the phenomenon of electromagnetic induction.
