NEET Physics: Magnetic Effects of Current and Magnetism — MCQ Test 8

Q6. A wire of length \( 1.6 \, \text{m} \) carrying \( 5 \, \text{A} \) is at \( 45^\circ \) to a magnetic field of \( 0.1 \, \text{T} \). What is the force on the wire?

Q7. Two parallel wires \( 0.09 \, \text{m} \) apart carry \( 4 \, \text{A} \) and \( 5 \, \text{A} \) in opposite directions. What is the force per unit length? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

Q8. A solenoid has 700 turns per meter and carries a current of \( 2.8 \, \text{A} \). What is the magnetic field inside it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

Q9. A long straight wire carries a current of \( 30 \, \text{A} \). What is the magnetic field at a distance of \( 0.3 \, \text{m} \) from it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

Q10. A solenoid with 900 turns per meter carries \( 2 \, \text{A} \). What is the magnetic field inside? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

NEET PhysicsMagnetic Effects of Current and Magnetism

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A wire of length \( 0.8 \, \text{m} \) carrying \( 3 \, \text{A} \) makes an angle of \( 30^\circ \) with a magnetic field of \( 0.6 \, \text{T} \). What is the force on the wire?

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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 Carrying, Magnetic, Parallel, Currents, Direction, and Straight.

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 wire of length \( 0.8 \, \text{m} \) carrying \( 3 \, \text{A} \) makes an angle of \( 30^\circ \) with a magnetic field of \( 0.6 \, \text{T} \). What is the force on the wire?

  • A. 1.44 N
  • B. 0.72 N
  • C. 0.36 N
  • D. 1.08 N

Q2. Two parallel wires \( 0.03 \, \text{m} \) apart carry currents of \( 10 \, \text{A} \) and \( 2 \, \text{A} \) in the same direction. What is the force per unit length between them? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

  • A. 6.67 × 10⁻⁶ N/m
  • B. 1.33 × 10⁻⁵ N/m
  • C. 2.67 × 10⁻⁵ N/m
  • D. 2.00 × 10⁻⁵ N/m

Q3. A long straight wire carries a current of \( 22 \, \text{A} \). What is the magnetic field at a distance of \( 0.2 \, \text{m} \) from it? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

  • A. 2.2 × 10⁻⁵ T
  • B. 4.4 × 10⁻⁵ T
  • C. 1.1 × 10⁻⁵ T
  • D. 3.3 × 10⁻⁵ T

Q4. A straight wire of length \( 0.9 \, \text{m} \) carries a current of \( 7 \, \text{A} \) perpendicular to a uniform magnetic field of \( 0.2 \, \text{T} \). What is the force on the wire?

  • A. 1.26 N
  • B. 2.52 N
  • C. 0.63 N
  • D. 1.8 N

Q5. A circular coil of radius \( 0.04 \, \text{m} \) with 50 turns carries \( 1.8 \, \text{A} \). What is the magnetic field at the center? (\( \mu_0 = 4 \pi \times 10^{-7} \, \text{T m/A} \))

  • A. 7.07 × 10⁻⁴ T
  • B. 2.82 × 10⁻³ T
  • C. 1.06 × 10⁻³ T
  • D. 1.41 × 10⁻³ T

+ 5 more questions in the actual test

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