Physics · Circuit Theory
In a series RL circuit connected to a DC source, what is the physical significance of the time constant τ = L/R?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The time required for the inductor current to drop to zero
- 2The time required for the resistor voltage to drop to 50% of its initial value
- 3The time required for the stored magnetic energy to double
- 4The time required for the current to rise to approximately 63.2% of its maximum steady-state value✓
Correct answer
The time required for the current to rise to approximately 63.2% of its maximum steady-state value
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