# In a coil with an inductance of 0.6 g, the current is 20A. How will the energy of the magnetic

December 29, 2020 | education

| **In a coil with an inductance of 0.6 g, the current is 20A. How will the energy of the magnetic field change if the current strength is halved.**

Let us recall the formula for the energy of the magnetic field, given to us in the textbook of the 10th grade of the basic course:

W = L * I ^ 2/2

W2 = 1/4 * L * I ^ 2/2

Answer: Will decrease by 4 times

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