Question

Deeply explain Oersted 's experiment to show magnetic effect of current

Answer 1

Magnetic poles and electric charges at one time seemed rather similar: in each case, two kinds existed, opposites attracted and likes repelled. As Coulomb found around 1777, the forces between charges or poles always diminished with distance r like 1/r2, which was also the way gravity decreased.

    Yet there were differences. Magnetic poles always came in matched pairs, and steel needles could be magnetized by stroking them repeatedly in one direction by the pole of another magnet, or a natural "lodestone" magnet. Soft iron (like the kind used in paperclips and baling wire) also became magnetized when touched by a magnet, but this magnetization was temporary and ended when the magnet was removed.

    The Earth itself was a giant magnet. This "geomagnetism" was a boon to sailors in mid-ocean, but magnetic north differed by a few degrees from astronomical north, and its direction slowly shifted over the decades. Edmond Halley--remembered for his comet--came up with an ingenious explanation of that slow variation: Earth consisted of layers, spheres within spheres, each magnetized differently and rotating slightly differently (it was more complicated than that).

Answer 2

$\huge \fbox \gray{Answer -: }$

Take a magnetic needle freely pivoted on its stand . Connect a dry cell , through a switch K and a variable resistance to a thick copper wire AB , as parallel to the magnetic needle , such that current flows from South to North .

It is observed that the North pole of the magnetic needle shows deflection towards west . Increase the magnitude of current by decreasing resistance. It observed that deflection of the north pole of the magnetic needle towards west increases . If we continue increasing the current , it will be found that a stage comes when The north pole of the magnetic needle points into the geographic west .

It is found that if the conductor is help below the magnetic needle when current is flowing from South to North , the north pole of magnetic needle points towards the east as illustrated in Diagram , Conversely when conductor is held above the magnetic needle was the current flows from north to south then the north pole of needle points towards the east as illustrated in the diagram , If the conductor is held below the magnetic needle and illustrated in the diagram , the north pole of the magnetic needle point towards the west .

$\bold \gray{Conclusions \: from \: Oersted \: 's \: experiment}$

• Whenever current is passed through a straight conductor is behave like a magnet.
• The magnitude of the magnetic effect decreases with the strength of the current.

Diagram in Attachment ⬆️

$\bold \red{Hope \: it \: helps \: you}$