Umakant Kondapure, Collin Fernandes, Nipun Bhatia, Vikram Bathula and, Ketki Deshpande Solutions for Chapter: Electromagnetic Induction, Exercise 1: Classical Thinking

In parallel resonance, the current will be minimum when
 

In rejector circuit, above resonant frequency the circuit is
 

At resonance, the source current is
 

The natural frequency of $LC$ circuit is equal to
 

In the series resonant circuit at resonance,
 

If the current in the primary coil is reduced from $3 \mathrm{A}$ to $0$ in $10 \mathrm{s}$, then the induced e.m.f. in the secondary is $15\times {10}^{-3}$ $\mathrm{V}$. The mutual inductance of the coil will be
 

A rectangular loop of area $0.4 {\mathrm{m}}^2$ is lying in a magnetic field of $4\times {10}^{-3}$ $\mathrm{T}$. If the plane of the loop is at right angles to the magnetic field, then the magnetic flux passing through the loops will be

In an induction coil, the coefficient of mutual inductance is $4 \mathrm{H}$. If a current of $5 \mathrm{A}$ in the primary coil is cut-off in $\frac{1}{1500} \mathrm{s},$ the e.m.f. at the terminals of the secondary coil will be