| In a coil of resistance \[10\,\,\Omega ,\] the induced 2 current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in weber is [AIPMT (M) 2012] |
 |
A) 8
B) 2
C) 6
D) 4
Correct Answer: B
Solution :
| \[I=\left| \frac{1}{R}\frac{d\phi }{dt} \right|\] |
| \[|d\phi |=|IRdt|\] |
| \[d\phi =\] (area of triangle) \[\times R\] |
| \[=\left( \frac{1}{2}\times 4\times 0.1 \right)\times 10=2\,Wb\] |
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