When a direct current of 0.1 A flows through the coil, the magnetic current through it is 0.02 Vb.
| August 16, 2021 | education
When a direct current of 0.1 A flows through the coil, the magnetic current through it is 0.02 Vb. Find the energy stored in this coil.
To determine the energy stored by the used coil, we apply the formula: Wm = F * I / 2.
Values of variables: Ф – magnetic flux in the used coil (Ф = 0.02 Vb); I – current strength (I = 0.1 A).
Let’s perform the calculation: Wm = F * I / 2 = 0.02 * 0.1 / 2 = 1 mJ (0.001 J).
Answer: The used coil has an energy reserve of 1 mJ.
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