how can current induce in a circular coil when we oscillate a bar magnet nearer to it?

Question

how can we say that the induced emf apposes the direction of motion of the magnet?please donot say its just observation or its according to lenz's law.

Answer 1

while studying 10th u might have learnt that accn to newtons law
of gravitation two bodies attract eachother .do u know the reason y they attract each other....no.,these all r laws dear and
"laws have no causes"

Answer 2

Will a spinning Neodymium Magnet set off a present day interior the copper coil which surrounds it? confident, if the coil is oriented in one in all those way that it "cuts" the magnetic field strains. i'm doing an test the place I also have a magnet interior a copper coil that's linked to a voltage meter, and that i'm questioning if while the magnet is spun on its axis if it is going to set off a present day interior the coil. Does the axis on which it spins impression this or not? confident, the axis is obligatory. it won't be useful to establish a spin such that there is not any present day prompted, however the orientation is important to get optimal outcomes. think of that the Earth is an ideal magnet with north and south poles and entirely aligned field strains, rotating because of the fact the Earth particularly does. A coil of twine going around the equator could not somewhat have present day prompted, because of the certainty that the coil does not be effectively reducing field strains. Making the earth rotate such that the poles went end over end could be an optimal orientation. Does the coil would desire to be bare twine or can this is insulated? It would not count, whether it helps to have lacquered twine and a brilliant style of loops of twine (as a substitute of in basic terms one loop). The gauge of the twine would not somewhat impression the end result, yet thinner twine is far less complicated to loop assorted circumstances in a small quantity of area. i think that while you're producing severe adequate currents, the resistance in thinner twine and the warmth generated would substitute right into a situation (generator windings usually breakdown because of the fact of overheating). solid success!

Answer 3

How is current induced in a coil by an oscillating a bar magnet
By
Minootoo

In any wire or substances there is a random motion of electrons.

The magnet's oscillation near a coil of wire or even a single loop brings order to the random motion; this disturbance causes a collision of a kind changing the direction of the motion.