Sub-topic 1
2024 · National Preliminary
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Angular frequency of an ideal resonant lc circuit
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Sub-topic 2
2026 · National Preliminary
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Angular frequency of an ideal resonant lc circuit
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Sub-topic 3
2024 · National Preliminary
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Inductive reactance of a single inductor
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Sub-topic 4
2023 · National Preliminary
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Inductive reactance of a single inductor
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Sub-topic 5
2024 · National Preliminary
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Reactance of inductors connected in series
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Sub-topic 6
2026 · National Preliminary
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Impedance of an rc circuit from resistance and capacitive reactance
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Sub-topic 7
2026 · National Quarterfinal
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Impedance of an ac circuit from resistance and reactance
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Sub-topic 8
2023 · National One-Eighth
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Impedance of a series rl circuit
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Sub-topic 9
2021 · National Preliminary
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Riddle: reactance in an ac circuit
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Sub-topic 10
2021 · National Preliminary
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Formula for impedance in a series ac circuit (true/false)
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Sub-topic 11
2024 · National One-Eighth
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Capacitance required for a given rlc resonance frequency
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Sub-topic 12
2017 · National Quarterfinal
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Power factor of a series rl circuit from resistance and inductive reactance
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Sub-topic 13
2024 · Regional Championship
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Rms current or voltage in an ac circuit from its impedance magnitude (v=iz)
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Sub-topic 14
2026 · National Preliminary
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Problem of the day: reactance and natural frequency of an lc tank circuit
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Sub-topic 15
2025 · National Preliminary
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Time constant of a series cr (resistor-capacitor) circuit
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Sub-topic 16
2023 · National Preliminary
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Time constant of a series rl circuit
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Sub-topic 17
2003 · National Semifinal
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Impedance and resistance share the same si unit
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Sub-topic 18
2013 · National Preliminary
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Time for the voltage on a discharging rc circuit to fall by half
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Sub-topic 19
2013 · National Preliminary
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Time constant of an rc circuit
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Sub-topic 20
2013 · National Preliminary
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Time constant of an rl circuit
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Sub-topic 21
2013 · National Preliminary
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Resonance frequency formula of an lc circuit
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Sub-topic 22
2013 · National Quarterfinal
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Resonance frequency of an lc circuit from given l and c
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Sub-topic 23
2013 · National Quarterfinal
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Finding the inductance of an lc circuit from resonance frequency and capacitance
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Sub-topic 24
2013 · National Quarterfinal
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Finding the capacitance of an lc circuit from resonance frequency and inductance
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Sub-topic 25
2017 · National Semifinal
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Power factor of a series r-x circuit from resistance and reactance (three variants)
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Sub-topic 26
2020 · National One-Eighth
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Impedance of a series lr circuit from angular frequency, inductance and resistance (three variants)
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Sub-topic 27
2021 · National Quarterfinal
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Rc time constant of a resistor in series with a mixed series-parallel capacitor network
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Sub-topic 28
2021 · National Preliminary
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Rms current in an ac circuit from rms voltage and impedance
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Sub-topic 29
2021 · National Semifinal
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Current in a shorted lr circuit after a given multiple of the time constant has elapsed
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Sub-topic 30
2023 · National Preliminary
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Time constant of an rl circuit, τ=l/r
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