۱۶. $\varepsilon = -N \frac{\Delta \Phi}{\Delta t} \to \varepsilon = -NA \frac{\Delta B}{\Delta t} \to \varepsilon = -1000 \times 50 \times 10^{-4} \times \frac{0.08}{0.01}$ $|\varepsilon| = 4 \text{ V}$

۱۷. $\frac{T}{2} = 20 \times 10^{-3} \to T = 40 \times 10^{-3} \text{ s}$ $I = I_m \sin \frac{2\pi}{T} t \to I = 4 \sin \frac{2\pi}{40 \times 10^{-3}} t \to I = 4 \sin 50\pi t$