Electromagnetic Induction & Alternating Currents-LCR Series Circuit [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 5 of 31
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Question 1
Question MCQ▾
A resistor and a capacitor are connected in series with an ac source. If the potential drop across the capacitor is 5 V and that across resistor is 12 V, applied voltage is,
Choices
Choice (4) | Response | |
---|---|---|
a. | 12 V | |
b. | 13 V | |
c. | 17 V | |
d. | 5 V |
Passage
Read the passage given below and answer the questions that follow:
A student constructs a series RLC circuit. While operating the circuit at a frequency f she uses an AC voltmeter and measures the potential difference across each device as (∆ VR) = 8.8 V, (∆ VL) = 2.6V and (∆ VC) = 7.4V.
Question 2 (1 of 3 Based on Passage)
Question MCQ▾
The circuit is constructed so that the inductor is next to the capacitor. What result should the student expect for a measurement of the combined potential difference (∆ VL + ∆ VC) across the inductor and capacitor?
Choices
Choice (4) | Response | |
---|---|---|
a. | 7.8 V | |
b. | 10.0 V | |
c. | 7.4 V | |
d. | 4.8 V |
Question 3 (2 of 3 Based on Passage)
Question MCQ▾
What result should the student expect for a measurement of the amplitude Em of the potential difference across the power supply?
Choices
Choice (4) | Response | |
---|---|---|
a. | 10.0 V | |
b. | 4.0 V | |
c. | 13.6 V | |
d. | 18.8 V |
Question 4 (3 of 3 Based on Passage)
Question MCQ▾
What will happen to the value of ( ∆ VL ) if the frequency is adjusted to increase the current through the circuit?
Choices
Choice (4) | Response | |
---|---|---|
a. | (∆ V L) will decrease. | |
b. | (∆ VL) will increase. | |
c. | (∆ V L) will remain the same regardless of any changes to f. | |
d. | There is not enough information to answer the question. |
Question 5
Question MCQ▾
A series LCR arrangement with XL = 80Ω, XC = 50Ω, R = 40Ω is applied across a. c. source of 200 V. Choose the correct options.
(1) Wattless current = 3.2 A
(2) Power current = 3.2 A
(3) Power factor = 0.6
(4) Impedance of circuit = 50 Ω
Select the correct answers and mark it according to the following codes:
Codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 2 and 4 are correct | |
b. | 1 and 2 are correct | |
c. | 1 and 3 are correct | |
d. | 1,2 and 3 are correct |