NEET Physics: Alternating Currents — MCQ Test 14

Q6. A \( 25 \, \Omega \) resistor is connected to a \( 125 \, \text{V} \) (rms) AC source. What is the rms current?

Q7. A \( 212.1 \, \text{V} \) (peak) AC source is connected to a \( 75 \, \Omega \) resistor. What is the average power consumed?

Q8. A \( 141.4 \, \text{V} \) (peak) AC source is connected to a \( 50 \, \Omega \) resistor. What is the average power consumed?

Q9. In an AC circuit with a capacitor and resistor in series, how does the phase difference between voltage and current change if the capacitance is increased?

Q10. In an AC circuit with only a resistor, what is the value of the power factor?

NEET Physics — Alternating Currents

Free MCQ Test 14 of 24

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Medium

A series LCR circuit with \( R = 70 \, \Omega \), \( X_L = 90 \, \Omega \), \( X_C = 40 \, \Omega \) has a \( 210 \, \text{V} \) (rms) source. What is the power dissipated?

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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
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Key concepts covered in this specific test include Dissipated, Resistor, Capacitor, Impedance, Operates, and Individual.

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 series LCR circuit with \( R = 70 \, \Omega \), \( X_L = 90 \, \Omega \), \( X_C = 40 \, \Omega \) has a \( 210 \, \text{V} \) (rms) source. What is the power dissipated?

  • A. 400 W
  • B. 410 W
  • C. 420 W
  • D. 417.6 W

Q2. A \( 80 \, \Omega \) resistor and \( 25 \, \mu\text{F} \) capacitor are in series with a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) source. What is the impedance?

  • A. 145 Ω
  • B. 148 Ω
  • C. 152 Ω
  • D. 150.5 Ω

Q3. A light bulb rated at \( 100 \, \text{W} \) operates on a \( 220 \, \text{V} \) (rms) AC supply. What is the peak voltage across the bulb?

  • A. 300 V
  • B. 311 V
  • C. 320 V
  • D. 330 V

Q4. A \( 45 \, \Omega \) resistor and \( 18 \, \mu\text{F} \) capacitor are in series with a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) source. What is the impedance?

  • A. 180 Ω
  • B. 181 Ω
  • C. 183 Ω
  • D. 182.4 Ω

Q5. In an AC circuit with a resistor and capacitor in series, why can the sum of individual voltages exceed the source voltage?

  • A. Because resistance is zero
  • B. Because frequency is high
  • C. Because current is maximum
  • D. Because voltages are out of phase

+ 5 more questions in the actual test

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