Question

Индуктивность катушки 0,1 мГн.При каком токе энергия магнитного поля равна 10^-4Дж?​

Answer 1

Объяснение:

Дано

L=0,1мГн=0,1×10`³Гн

W=10`⁴Дж

Найти

W=?

Решение

W=L·I²/2

I=√(2·W/L)=√(2·10⁻⁴/0,1·10⁻³)=1,4 А

Ответ: 1,4А

Answer 2

Calculating Magnetic Field Energy

To calculate the energy of a magnetic field in a coil, we can use the formula:

Energy = (1/2) * L * I^2

Where: - L is the inductance of the coil in henries (H) - I is the current flowing through the coil in amperes (A)

Given that the inductance of the coil is 0.1 mH (millihenries) and we need to find the current at which the energy of the magnetic field is equal to 10^-4 J (joules), we can rearrange the formula to solve for the current:

I = sqrt((2 * Energy) / L)

Substituting the given values: L = 0.1 mH = 0.1 * 10^-3 H Energy = 10^-4 J

We can now calculate the current using the formula.

Calculating Current

I = sqrt((2 * 10^-4) / (0.1 * 10^-3)) I = sqrt(2 * 10^-1) I = sqrt(0.2) I ≈ 0.447 A

So, the current at which the energy of the magnetic field is equal to 10^-4 J is approximately 0.447 amperes.