NEET Physics: Alternating Currents — MCQ Test 13

Q6. A series LCR circuit has \( L = 5 \, \text{H} \), \( C = 20 \, \mu\text{F} \). What is the resonant angular frequency?

Q7. A \( 20 \, \mu\text{F} \) capacitor is connected to a \( 230 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the peak current?

Q8. A series LCR circuit has \( R = 50 \, \Omega \), \( X_L = 80 \, \Omega \), \( X_C = 60 \, \Omega \). What is the power factor?

Q9. A series LCR circuit has \( R = 20 \, \Omega \), \( X_L = 40 \, \Omega \), \( X_C = 60 \, \Omega \). What is the phase angle?

Q10. What is the role of resonance in the operation of a radio receiver?

NEET Physics — Alternating Currents

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A \( 50 \, \mu\text{F} \) capacitor is connected to a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the peak current?

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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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10
Medium
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Key concepts covered in this specific test include Capacitor, Connected, Capacitive, Dissipate, Supplies, and Resistor.

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 \( 50 \, \mu\text{F} \) capacitor is connected to a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the peak current?

  • A. 4.5 A
  • B. 4.88 A
  • C. 5.2 A
  • D. 5.5 A

Q2. In an AC circuit with only a capacitor, what is the nature of the current when the voltage is at its peak?

  • A. It is zero
  • B. It is at its maximum
  • C. It is in phase with the voltage
  • D. It lags the voltage

Q3. Why does a purely capacitive AC circuit not dissipate power despite having current flow?

  • A. Because capacitance is infinite
  • B. Because energy is stored and returned without loss
  • C. Because resistance is high
  • D. Because current is zero

Q4. A \( 180 \, \text{V} \) (rms) source supplies a \( 90 \, \Omega \) resistor. What is the peak current?

  • A. 2.5 A
  • B. 2.7 A
  • C. 3 A
  • D. 2.828 A

Q5. A series LCR circuit with \( R = 50 \, \Omega \) is at resonance with a \( 230 \, \text{V} \) (rms) source. What is the rms current?

  • A. 4 A
  • B. 4.2 A
  • C. 4.6 A
  • D. 5 A

+ 5 more questions in the actual test

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