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  • The current (I) in the inductance is varying with time according to the plot shown in figure. <img alt=

The current (I) in the inductance is varying with time according to the plot shown in figure.

Which one of the following is the correct variation of voltage with time in the coil?

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)

best_answer

As we learnt in 

Faraday Second Law of Induction emf -

varepsilon = frac{-dphi }{dt}= -Lfrac{dI}{dt}

-

 

 

\varepsilon =L\frac{dI}{dt}

\frac{dI}{dt}= slope of graph

for 0<t<T/2, slope is positive & constant

T/2<t<T, slope is negative & constant

Hence only d represent correct value of V.

Posted by

vishal kumar

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