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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Easy conceptual qns rates assuered
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[Post New]11 Feb 2008 22:57:05 IST
    Subject: Easy conceptual qns rates assuered
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rakesh61 (1898)

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2 coils have a mutual inductance .005 H
 
The current changes in the first coil a sper the equation
 
I = Xsin wt
 
X = 10 A
 
and w = 100 pi   rad
 
The maximum value of emf in the second coil is
 
Ans 5pi
 
Please give detailed solution rates assured
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[Post New]11 Feb 2008 23:19:58 IST
    Subject: Re:Easy conceptual qns rates assuered
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elastiboysai (2327)

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Simple
use d formula
phi= MI
so d(phi)/dt=Mdi/dt
so -e=M10WsinWt
-e=1000pi *sinWt*5/1000 e= -5pisinWt
is max wen sin=-1
and max=5pi
 this reply: 7 points  (with 1 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
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