MOTIONAL EMF, INDUCED CURRENT & POWER USED:
MOTIONAL EMF:
The emf actuated across the closures of a conductor because of its movement in a magnetic field is called motional emf.
DESCRIPTION:
Conductor PQ of length L is allowed to continue on a U-moulded leading rails. (Here the slidable conductor PQ is moved outwards with a speed v).
When the conductor moved outwards the space of the rectangular circle increments and consequently the attractive transition connected with the shut circle increments. Thus,the magnetic flux linked with the closed-loop increases.
An emf is set up across the conductor PQ due to which an initiated current stream in the anticlockwise course (as displayed in the image).According to Faraday’s law of electromagnetic induction the emf incited is – BLv
MAGNETIC FLUX LINKED WITH THE CLOSED-LOOP :
INDUCED EMF :
INDUCED CURRENT :
LENZ’S LAW :
Lenz’s law expresses that, ” The direction of the actuated current in a circuit is with the end goal that it goes against the reason which produces it”.
POWER USED:
RIGHT HAND PALM RULE:
FLEMING’S RIGHT HAND RULE:
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