NEET Physics: Electromagnetic Induction — MCQ Test 23

Q6. A coil of 80 turns is placed in a magnetic field that increases from 0 to 0.03 Wb/m² in 0.2 s. If the coil area is 0.05 m², what is the induced emf?

Q7. A circular loop of radius 15 cm is deformed into a straight wire in a 0.15 T field in 0.6 s. What is the induced emf?

Q8. A solenoid of 550 turns per meter and area 0.016 m² has a current drop from 7 A to 4 A in 0.3 s. What is the self-induced emf? (\( \mu_0 = 4\pi \times 10^{-7} \, \text{H/m} \))

Q9. A solenoid of 700 turns/m and area 0.008 m² has \( \mu_r = 1 \). What is its self-inductance? (\( \mu_0 = 4\pi \times 10^{-7} \, \text{H/m} \))

Q10. A coil of 120 turns and area 0.04 m² is in a 0.09 T field that drops to zero in 0.3 s. What is the induced emf?

NEET Physics — Electromagnetic Induction

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A wheel with 5 spokes of 0.4 m each rotates at 30 rpm in a 0.7 T field. What is the induced emf?

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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 Electromagnetic Induction. 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 Solenoid, Inductance, Increases, Generator, Commutator, and Conducting.

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 wheel with 5 spokes of 0.4 m each rotates at 30 rpm in a 0.7 T field. What is the induced emf?

  • A. 0.14 V
  • B. 0.15 V
  • C. 0.16 V
  • D. 0.176 V

Q2. A solenoid of 1000 turns/m and area 0.01 m² has \( \mu_r = 2 \). What is its self-inductance? (\( \mu_0 = 4\pi \times 10^{-7} \, \text{H/m} \))

  • A. 0.02 H
  • B. 0.022 H
  • C. 0.025 H
  • D. 0.03 H

Q3. A coil of 130 turns and area 0.04 m² is in a field that increases from 0 to 0.05 T in 0.2 s. What is the induced emf?

  • A. 1.0 V
  • B. 1.3 V
  • C. 1.5 V
  • D. 1.8 V

Q4. In an AC generator, slip rings are used instead of a split ring commutator. What is the primary reason for this design choice?

  • A. To maintain alternating current output
  • B. To increase the generator’s efficiency
  • C. To reduce mechanical friction
  • D. To convert AC to DC output

Q5. A conducting loop is placed in a magnetic field that remains constant in magnitude and direction. No emf is induced because of what condition?

  • A. High loop resistance
  • B. No change in magnetic flux
  • C. Low field strength
  • D. Loop orientation

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