The magnetic induction of a uniform magnetic field changes at a rate of 20 T per second. In this case, an induction EMF

The magnetic induction of a uniform magnetic field changes at a rate of 20 T per second. In this case, an induction EMF of 12 V is excited in a coil with a cross-sectional area of 6 cm2. How many turns are in the coil? The coil axis is parallel to the magnetic induction lines.

Given:
n-number of turns
S-cross-sectional area
Faraday’s law: E = n * dF / dt = n * S * dB / dT
hence
n = E / (S * dB / dT) = 12 / (0.0006 * 20) = 1000
Answer: 1000 turns in a coil