An RLC circuit has an inductance of 25mH and a capacitance of 5.0μF. The charge on the capacitor does NOT oscillate but rather decays exponentially to zero. The resistance in the circuit must be:
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Question

An RLC circuit has an inductance of 25mH and a capacitance of 5.0μF. The charge on the capacitor does NOT oscillate but rather decays exponentially to zero. The resistance in the circuit must be:

G1 Physics · Accepted Answer

Non-oscillatory response requires R≥2√(L/C). With L=0.025 H and C=5 μF, the critical value is 100√2 Ω. Hence A.