# In a coil with an inductance of 10-4 H, an induction emf of 20 V appears, calculate the rate

October 8, 2021 | education

| **In a coil with an inductance of 10-4 H, an induction emf of 20 V appears, calculate the rate of change of the current in this coil.**

We are given the following data:

L = 10 ^ -4 H,

E = 20 V.

According to the condition of the problem, we need to find: ΔI / Δt.

In order to do this, you need to write the following formula:

E = L * ΔI / Δt;

We transform to find:

ΔI / Δt = E / L;

Substitute the values:

ΔI / Δt = 20/10 ^ -4;

ΔI / Δt = 200000 A / s.

Answer: ΔI / Δt = 200000 A / s.

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