Magnetic fields through solenoids (Hindi) | Physics | Khan Academy
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- เผยแพร่เมื่อ 7 ก.พ. 2025
- Let's learn what solenoids are and why are they important.
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Ps: edited.
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This is the best explanation for a solenoid and can be used to understand:
(i)why solenoid is needed?
(ii)what actually happen when a single ring is added?
(iii)why a large number of rings needed to be added?
(iv)finally, why is the solenoid made the way it is?
(v)what the hell is electromagnet?
(vi)advantages with solenoid rather than a bar magnet.
(vii)disadvantages.
(viii)its uses.
(ix)what is soft iron and how can it be used with a solenoid?
(x)why only soft iron and not the other iron is used in it?
BONUS-for teachers:(xi)how to do humour while teaching.
Bonus point was some seriously good
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Tell me if i am correct or not,
The reverse action of an electric motor when the connection of wires change with respect to terminals of a battery is due to the property of a solenoid to change the direction of magnetic field when poles of magnet is changed as a result of chsnged terminals of the battery and hence changed direction of current .🤔
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4:56 Solenoid originates from the *Greek* (not German) word Sōlēn meaning pipe.
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