Question

Voltage drop across inductance L given by
1. Li
2. L di/dt
3. DL/it
4. L dL/dt​

Answer 1

To find:

Voltage drop across inductance L given by ?

Calculation:

The voltage drop (or back EMF) generated across an inductor can be calculated by simplify the rate of change of magnetic flux :

$\therefore \: V = - \dfrac{d \phi}{dt}$

$\implies \: V = - \dfrac{d(L \times i)}{dt}$

$\implies \: V = - L \: \dfrac{d i}{dt}$

$\implies \: | V | = L \: \dfrac{d i}{dt}$

So, the voltage drop in an inductor can be expressed as the product of the inductance and the instantaneous rate of change of current through the circuit.

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