As investigated in the preliminary quiz, and d, the two important parameters of

Question

As investigated in the preliminary quiz, and d, the two important parameters of the zero-input response, are the same for both the circuit current and the capacitor voltage. In fact they are also the same for the inductor voltage! Thus, they can be measured from observation of either the circuit current or the capacitor voltage. However, it is more convenient to measure the capacitor voltage rather than the current, since this is possible even when the variable resistor is set to zero. Are there any complications associated with observing the inductor voltage directly?

Explanation / Answer

Inductor Voltage is associated with differential operator i.e. voltage across inductor is given as

VL= L(di/dt)

now if there is constant current in the circuit di/dt will be 0 and no voltage can be captured while it is not true if we measure capacitor voltage which is associated with interal operator.

Also inductor behaves as short circuit after long time duration, therefore voltage will always be 0 across it.

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