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Self inductance is of primary and second...

Self inductance is of primary and secondary of an ideal transformer are L and 4L respectively. If current through the primary coil is `i=I_0sinomegat` then induced EMF across secondary coil due to current variation in the primary coil at `t=pi/(3omega)s` is

A

`2LI_0omega`

B

`sqrt3L/(2)I_0 omega`

C

`LI_0omega`

D

Zero

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