TIME VARIENT AND TIME INVARIENT

Time variant:

If the V-I characteristic's of an element vary with respect to time then those elements are known as Time variant.

Here the V-I characteristic's at t(1) are different from V-I characteristic's at t(2).

Time invariant:

If the V-I characteristic's of an element remains same with respect to change in time then those elements are known as Time invariant.

Here the V-I characteristic's at t(1),t(2) and t(3) remains the same .