The loss-of-charge method is particularly suitable for measuring medium resistance values. Is this statement true or false?

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Solve this multiple-choice question and choose the correct option.

Accepted Answer

Introduction / Context:The loss-of-charge method is a classical technique for measuring medium resistance values using the discharge of a capacitor through the unknown resistance. It is commonly taught in electrical measurement courses. Given Data / Assumptions: Principle: capacitor discharges through the resistance to be measured. Voltage across the capacitor decreases exponentially with time. By measuring time for a known voltage drop, resistance can be computed. Concept / Approach:The method uses the relation V = V0 e^(-t/RC). Taking logs, R = t / (C ln(V0/V)). Accuracy depends on time measurement and insulation. Suitable resistances are typically 10^5 to 10^7 ohms (medium range). Step-by-Step Solution: Charge a capacitor to V0.Connect resistance under test.Measure time for voltage to fall to V.Use relation R = t / (C ln(V0/V)). Verification / Alternative check: High resistances → leakage dominates; low resistances → discharge too fast; medium resistances ideal. Why Other Options Are Wrong: ”False” ignores well-established usage; voltage dependency is not the deciding factor; temperature only affects accuracy slightly. Common Pitfalls: Trying to use this method for too high resistances where leakage interferes. Final Answer: True

The loss-of-charge method is particularly suitable for measuring medium resistance values. Is this statement true or false?

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