How many turns of wire should a winding with a cross-sectional area of 50 cm2 contain, so that when the magnetic

How many turns of wire should a winding with a cross-sectional area of 50 cm2 contain, so that when the magnetic induction changes from 1.1 T to 0.1 T for 5 ms, an EMF of induction of 100 V is excited.

Given:
S = 50 cm ^ 2 = 5 * 10 ^ -3 m ^ 2;
B1 = 0.1 T; B2 = 1.1 T;
Delta t = 5 ms = 5 ^ 10 ^ -3 s;
e = 100 V.
Decision:
e = | delta F / delta t | * n = delta BS / (delta t) * n = ((B2-B1) Sn) / delta t.
Let us express n from this formula.
n = (e * delta t) / ((B2-B1) S) = (100 * 5 * 10 ^ -3) / ((1,1-0,1) * 5 * 10 ^ -3) = 100.
Answer: 100