The magnetic flux penetrating the contour evenly decreased from 16 to 12 weber in two seconds.

The magnetic flux penetrating the contour evenly decreased from 16 to 12 weber in two seconds. What was the value of the EMF of the inductions in the circuit equal in this case?

EMF of induction in the circuit can be calculated by the formula:
εi = ∆Ф / ∆t, where εi is the induction EMF in the circuit (V), ∆Ф is the change in magnetic flux (∆Ф = Ф1 – Ф2, where Ф1 is the initial value of the magnetic flux (Ф1 = 16 Wb), Ф2 is the final the value of the magnetic flux (Ф2 = 12 Vb), ∆t is the time during which the magnetic flux has changed (∆t = 2 s)).
Let’s calculate the value of the EMF induction in the circuit:
εi = ∆F / ∆t = (16 – 12) / 2 = 4/2 = 2 V.
Answer: EMF of induction in the circuit is 2 V.