Question:medium
An inductor of inductance L = 400mH and resistors of resistance R₁ = 2Ω and R₂ = 2Ω are connected to a battery of emf 12V as shown in the figure. The internal resistance of the battery is negligible. The switch S is closed at t = 0. The potential drop across L as a function of time is:
An inductor of inductance L = 400mH and resistors of resistance R₁ = 2Ω and R₂ = 2Ω are connected to a battery of emf 12V as shown in the figure. The internal resistance of the battery is negligible. The switch S is closed at t = 0. The potential drop across L as a function of time is:
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In RL circuits, voltage across the inductor decays exponentially after switching.
Updated On: Mar 20, 2026
- \( \dfrac{12}{t} e^{-3t}\,\text{V} \)
- \( 6(1-e^{-t/0.2})\,\text{V} \)
- \( 12e^{-5t}\,\text{V} \)
- 6e⁻5tV
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The Correct Option is D
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