NEET Physics: Alternating Currents — MCQ Test 1

Q6. A \( 60 \, \text{mH} \) inductor is connected to a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the rms current?

Q7. A \( 85 \, \text{mH} \) inductor is connected to a \( 230 \, \text{V} \), \( 50 \, \text{Hz} \) source. What is the peak current?

Q8. In an AC circuit with only an inductor, what is the instantaneous power when the current is at its maximum?

Q9. In a series LCR circuit, under what condition does the circuit behave as if it has only resistance?

Q10. What is the behavior of the impedance in a series LCR circuit at very high frequencies?

NEET Physics — Alternating Currents

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A transformer has \( N_p = 550 \), \( N_s = 1100 \). If \( V_p = 110 \, \text{V} \) (rms), what is the secondary voltage?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Alternating Currents. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Transformer, Secondary, Resonance, Relationship, Inductive, and Capacitive.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A transformer has \( N_p = 550 \), \( N_s = 1100 \). If \( V_p = 110 \, \text{V} \) (rms), what is the secondary voltage?

  • A. 200 V
  • B. 220 V
  • C. 240 V
  • D. 260 V

Q2. In a series LCR circuit at resonance, what is the relationship between the inductive and capacitive reactances?

  • A. They are equal
  • B. Inductive reactance is greater
  • C. Capacitive reactance is greater
  • D. They are inversely proportional

Q3. A \( 254.6 \, \text{V} \) (peak) AC source is connected to a \( 90 \, \Omega \) resistor. What is the average power consumed?

  • A. 360 W
  • B. 380 W
  • C. 400 W
  • D. 420 W

Q4. A series LCR circuit with \( R = 100 \, \Omega \), \( X_L = 130 \, \Omega \), \( X_C = 70 \, \Omega \) has a \( 300 \, \text{V} \) (rms) source. What is the power dissipated?

  • A. 640 W
  • B. 650 W
  • C. 670 W
  • D. 661.8 W

Q5. A transformer steps up \( 220 \, \text{V} \) to \( 440 \, \text{V} \). If the primary current is \( 10 \, \text{A} \), what is the secondary current?

  • A. 4 A
  • B. 5 A
  • C. 6 A
  • D. 7 A

+ 5 more questions in the actual test

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