Physics - EMI/AC Question with Solution | TestHub

A solenoid has 2000 turns wound over a length of $0.30\mathrm{m}$. The area of its cross-section is $1.2\times 10^{-3}{\mathrm{m}}^2$. Around its central section, a coil of 300 turn is wound. If an initial current of $2\mathrm{A}$ in the solenoid is reversed in $0.25\mathrm{s}$, then the emf induced in the coil is