Question
Electromagnetic induction is the:

Answer

  1. production of current by relative motion between a magnet and a coil
Explanation:
Electromagnetic induction is the production of current by relative motion between a magnet and a coil.The phenomenon of producing electric current in a conductor by moving it perpendicular to a magnetic field or vice -versa, is called electro magnetic induction.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

When the current through the electromagnet of a relay reaches a particular value:
A rocket is moving away from the earth at a speed of $6 \times 10^7 \mathrm{~m} / \mathrm{s}$ The rocket has blue light in it. What will be the wavelength of light recorded by an observer on the earth $($wavelength of blue light $= 4600 \mathring A )$
If the energy released in the fission of one nucleus is $200\ MeV.$ Then the number of nuclei required per second in a power plant of $16\ kW$ will be
The wavefront of a distant source of unknown shape is approximately:
A straight wire of diameter 0.5 mm carrying a current of 1 A is replaced by another wire of 1 mm diameter carrying the same current. The strength of magnetic field far away is(a) Twice the earlier value(b) Half of the earlier value(c) Quarter of its earlier value(d) Unchanged
   
   
A $3$ volt battery with negligible internal resistance is connected in a circuit as shown in the figure.  The current $I,$ in the circuit will be
In the following figure, the magnet is moved towards the coil with a speed $v$ and induced $emf$ is $e.$ If magnet and coil recede away from one another each moving with speed $v,$ the induced $emf$ in the coil will be
In a P-type semiconductor(a) Current is mainly carried by holes(b) Current is mainly carried by electrons(c) The material is always positively charged(d) Doping is done by pentavalent material
 
 
 
 
Assertion :   Moon is seen as it partly reflects the sun light falling on it
Reason     :  Moon is a satellite of earth. It does not emit light of its own(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 
Which of the following is not the property of a cathode ray(a) It casts shadow(b) It produces heating effect(c) It produces flurosence(d) It does not deflect in electric field