Voltages across R, L and C in series: V squared = VR squared + (VL - VC) squared
This type of question, asked 4 times: May 2021 S1, 16 May 2023 S2, 11 May 2024 S2, 18 Apr 2026 S2. All 4 questions below, oldest first.
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Question 1
May 2021 S1
24A series L-C-R circuit is connected to a source of alternating emf of 50 V and the potential difference across inductor and capacitor is 90 V and 60 V, respectively. The potential difference across the resistor isTap an option to check your answer.
Question 2
16 May 2023 S2
16In an LCR circuit, if is the effective value of the applied voltage, is the voltage across , and is the effective voltage across and respectively thenTap an option to check your answer.
Question 3
11 May 2024 S2
46The a.c. source is connected to series LCR circuit. If voltage across R is 40 V, that across L is 80 V and that across C is 40 V, then the e.m.f. 'e' of a.c. source isTap an option to check your answer.
Question 4
18 Apr 2026 S2
139In an LCR series circuit, the potential difference across the terminals of the inductor, capacitor and resistor is 60 V, 30 V and 40 V respectively. Then supply voltage will be equal toTap an option to check your answer.