Magnetic Circuits and Electromagnetic Induction Quiz
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Questions and Answers

What is the unit of magnetic flux?

  • Wb/m2
  • Coulomb/meter
  • Tesla
  • Weber (correct)

How is magnetic flux density defined?

  • Force experienced by a unit N-pole of one weber placed at a point
  • Number of flux lines passing through a unit area of cross section held perpendicular to the lines of flux (correct)
  • Magnetic field strength at any point within a magnetic field
  • Number of flux lines coming out of an N-pole

What is the unit of magnetic field strength or magnetic intensity?

  • Wb/m2
  • Coulomb/meter
  • Weber
  • Newton/weber (correct)

What does a magnetic material acquire when placed in a magnetic field?

<p>Magnetization (D)</p> Signup and view all the answers

How is absolute permeability defined for a magnetic material?

<p>Ability to acquire magnetization when placed in a magnetic field (B)</p> Signup and view all the answers

What is the expression for magnetic flux density?

<p>𝑩 = 𝚽⁄𝑨 (D)</p> Signup and view all the answers

What is the unit of absolute permeability of a magnetic material?

<p>Henry/meter (C)</p> Signup and view all the answers

How is magnetic flux defined?

<p>The total number of flux lines coming out of the N-pole of a magnet (D)</p> Signup and view all the answers

What is the representation for the unit of magnetic flux?

<p>Φ (D)</p> Signup and view all the answers

What does the absolute permeability of a magnetic material indicate?

<p>How easily the material can be magnetized (B)</p> Signup and view all the answers

Define the concept of magnetic flux density and provide its unit.

<p>Magnetic flux density is the number of flux lines passing through a unit area of cross section held perpendicular to the lines of flux. It is represented by the expression 𝑩 = 𝚽⁄𝑨 and its unit is Wb/m2.</p> Signup and view all the answers

What is the significance of absolute permeability in a magnetic material?

<p>Absolute permeability indicates the ease with which a magnetic material can be magnetized by an external magnetic field, and it influences the material's magnetic properties.</p> Signup and view all the answers

Explain the relationship between magnetic field strength and the force experienced by a unit N-pole in a magnetic field.

<p>The magnetic field strength at any point within a magnetic field is given by the force experienced by a unit N-pole of one weber placed at that point.</p> Signup and view all the answers

Describe the concept of self-inductance in magnetic circuits.

<p>Self-inductance refers to the ability of a coil to create an induced voltage in itself when the current flowing through it changes, due to the magnetic field produced by the coil.</p> Signup and view all the answers

What is the magnetization characteristic of ferromagnetic materials and how does it differ from other materials?

<p>Ferromagnetic materials exhibit a non-linear magnetization characteristic, which means their magnetization does not increase linearly with the applied magnetic field. This is in contrast to paramagnetic and diamagnetic materials.</p> Signup and view all the answers

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