A) 22 V
B) 18 V
C) 16 V
D) 40 V
Correct Answer: A
Solution :
(a) 22V Given. \[\phi =4{{t}^{2}}+6t+9\] and \[t=2s\] We know that, \[\left| \varepsilon \right|=\left| \frac{d\phi }{dt} \right|\] Here, \[\left| \frac{d\phi }{dt} \right|=\,|8t+6|\] \[\Rightarrow {{\left( \frac{d\phi }{dt} \right)}_{t=2}}=8\times 2+6\] Induced emf in the coil = 22 VYou need to login to perform this action.
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