NEET Physics: Alternating Currents — MCQ Test 3

Q6. In a purely capacitive AC circuit, the current leads the voltage by what phase angle?

Q7. A \( 120 \, \text{mH} \) inductor is connected to a \( 110 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the inductive reactance?

Q8. A \( 150 \, \Omega \) resistor is connected to a \( 300 \, \text{V} \) (peak) AC supply. What is the rms current in the circuit?

Q9. In a step-up transformer, how does the current in the secondary coil compare to the primary coil, assuming ideal conditions?

Q10. A series LCR circuit has \( L = 3.5 \, \text{H} \), \( C = 8 \, \mu\text{F} \). What is the resonant angular frequency?

NEET Physics — Alternating Currents

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A \( 160 \, \text{V} \) (rms) AC source supplies a \( 80 \, \Omega \) resistor. What is the average power consumed?

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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 Supplies, Resistor, Consumed, Combination, Inductor, and Capacitor.

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 \( 160 \, \text{V} \) (rms) AC source supplies a \( 80 \, \Omega \) resistor. What is the average power consumed?

  • A. 300 W
  • B. 320 W
  • C. 340 W
  • D. 360 W

Q2. In an AC circuit with a series combination of resistor, inductor, and capacitor, what is the condition for the circuit to be purely resistive?

  • A. When resistance is zero
  • B. When inductance is infinite
  • C. When capacitance is zero
  • D. When inductive and capacitive reactances cancel

Q3. A series LCR circuit has \( R = 40 \, \Omega \), \( L = 5 \, \text{H} \), \( C = 80 \, \mu\text{F} \). What is the resonant frequency in Hz?

  • A. 7 Hz
  • B. 8 Hz
  • C. 9 Hz
  • D. 10 Hz

Q4. A \( 55 \, \text{mH} \) inductor is connected to a \( 230 \, \text{V} \), \( 50 \, \text{Hz} \) AC source. What is the rms current?

  • A. 12 A
  • B. 13.32 A
  • C. 14 A
  • D. 15 A

Q5. A \( 12 \, \mu\text{F} \) capacitor is connected to a \( 230 \, \text{V} \), \( 50 \, \text{Hz} \) source. What is the capacitive reactance?

  • A. 260 Ω
  • B. 262 Ω
  • C. 265.3 Ω
  • D. 270 Ω

+ 5 more questions in the actual test

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