Question

A 2 mH inductor with some initial current can be represented as shown below, where s is the Laplace Transform variable. The value of initial current is

• A. 0.5 A
• B. 2.0 A
• C. 1.0 A
• D. 0.0 A

Answer 1

The correct option is A 0.5 A

$V=\frac{LdI}{dt}$

$V\left(s\right)=sLI\left(s\right)-LI\left(0^{+}\right)$

$\Rightarrow -LI\left(0^{+}\right)=-1mV\left(giveninequation\right)$

$I\left(0^{+}\right)=\frac{1mV}{2mH}=0.5A$