Explain the RL exponential current curve.
What will be an ideal response?
When the circuit is energized, the induced voltage is at its maximum value. It then decreases as the rate of increase of current becomes less. The current reaches its Ohm’s law value at the end of five time constants. At this point, the induced voltage is zero.
When the circuit is deenergized, the decay of current causes an induced voltage. This voltage attempts to maintain the current. At the end of five time constants, the current and the induced voltage are close to zero.
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