Answered

a flat coil of wire consisting of 240 turns, each with an area of 40 cm, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 0.27 t to -0.77 t in 5.3 s. if the coil has a total resistance of 22 , what is the magnitude of the induced current when the field is -0.25 t?



Answer :

magnitude of the induced current        

where  I = 0.5A

 Briefing

Knowing that the formula for magnetic flux is = NBA

Here, N is the number of turns,

B is the magnetic field,

and A is the area of the loop.

Knowing that the coil's EMF will be induced by the rate of change in magnetic flux,

we may calculate it as EMF = NA db/dt.

To find the induced EMF,

we now plug in all values.EMF = 0.2

voltageTherefore, according to Ohm's rule,

Current = EMF/Resistance I = 0.2/0.40.

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