NEET Physics: Magnetic Effects of Current and Magnetism — MCQ Test 7

Q6. A straight wire of length \( 1.4 \, \text{m} \) carries a current of \( 3 \, \text{A} \) perpendicular to a uniform magnetic field of \( 0.35 \, \text{T} \). What is the force on the wire?

Q7. A wire of length \( 1.7 \, \text{m} \) carrying \( 7 \, \text{A} \) is at \( 60^\circ \) to a magnetic field of \( 0.2 \, \text{T} \). What is the force on the wire?

Q8. A long wire carries \( 16 \, \text{A} \). At what distance is the magnetic field \( 8 \times 10^{-6} \, \text{T} \)? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

Q9. A straight wire of length \( 1.5 \, \text{m} \) carries a current of \( 6 \, \text{A} \) perpendicular to a uniform magnetic field of \( 0.25 \, \text{T} \). What is the force on the wire?

Q10. A circular loop of radius \( 0.14 \, \text{m} \) with 15 turns carries a current of \( 4 \, \text{A} \). What is the magnetic field at the center? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

NEET PhysicsMagnetic Effects of Current and Magnetism

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A solenoid with 2500 turns per meter carries a current of \( 2 \, \text{A} \). What is the magnetic field inside it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

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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 Magnetic Effects of Current and Magnetism. 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, Magnetic, Rectangular, Function, Resistance, and Converting.

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 solenoid with 2500 turns per meter carries a current of \( 2 \, \text{A} \). What is the magnetic field inside it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

  • A. 6.28 × 10⁻³ T
  • B. 3.14 × 10⁻³ T
  • C. 1.57 × 10⁻³ T
  • D. 9.42 × 10⁻³ T

Q2. A solenoid with 1600 turns per meter carries a current of \( 2 \, \text{A} \). What is the magnetic field inside it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

  • A. 4.02 × 10⁻³ T
  • B. 2.01 × 10⁻³ T
  • C. 8.04 × 10⁻³ T
  • D. 6.03 × 10⁻³ T

Q3. A rectangular loop of area \( 0.05 \, \text{m}^2 \) with 15 turns carries \( 2 \, \text{A} \) in a field of \( 1 \, \text{T} \) at \( 90^\circ \) to the plane. What is the torque?

  • A. 0.75 N m
  • B. 3 N m
  • C. 1 N m
  • D. 1.5 N m

Q4. A rectangular loop of area \( 0.08 \, \text{m}^2 \) with 15 turns carries \( 2.5 \, \text{A} \) in a field of \( 0.6 \, \text{T} \) at \( 30^\circ \) to the plane. What is the torque?

  • A. 1.56 N m
  • B. 0.52 N m
  • C. 0.9 N m
  • D. 1.2 N m

Q5. What is the primary function of the shunt resistance in converting a galvanometer to an ammeter?

  • A. Increase sensitivity
  • B. Increase resistance
  • C. Reduce sensitivity
  • D. Bypass excess current

+ 5 more questions in the actual test

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