Introduction to Inductance - Measurement of Inductance - Electronic Instruments and Measurements | Summary and Q&A

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March 23, 2021
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Introduction to Inductance - Measurement of Inductance - Electronic Instruments and Measurements

TL;DR

Inductance is the property of a material or coil that opposes changes in current direction or magnitude.

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Key Insights

  • 💱 Inductance is the property that opposes changes in current direction or magnitude.
  • 🪜 Inductors are coils of wire that add inductance to a circuit.
  • 💱 Inductance is measured in henries and can be defined as the property of a coil where changes in flux induce an emf.
  • 💯 Inductors can be classified based on core material, such as ferromagnetic or air core.
  • 🍹 In a series combination of inductors, the equivalent inductance is the sum of individual inductances.
  • 🍹 In a parallel combination of inductors, the reciprocal of the equivalent inductance is the sum of reciprocals of individual inductances.
  • ☢️ Inductors act as energy storage elements and find applications in radios, electronic testing instruments, sensors, transformers, motors, and filters.

Transcript

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Questions & Answers

Q: What is inductance and how is it defined?

Inductance is the property of a material or coil that opposes changes in current direction or magnitude. It can be defined as the property of a coil where electromagnetic force is induced due to variations in flux.

Q: How is inductance measured?

Inductance is measured in henries (H). One henry is defined as the inductance of a coil where one ampere of current induces an electromotive force (emf) of one volt.

Q: What is the relationship between inductance and the voltage induced in a coil?

The voltage induced in a coil is given by the equation V = L * dI / dt, where V is the induced voltage, L is the inductance, and dI / dt is the rate of change of current.

Q: How can inductors be classified based on core material?

Inductors can be classified into ferromagnetic, air core, toroidal, laminated core, and powdered core inductors based on the core material used.

Summary & Key Takeaways

  • Inductance is defined as the property of a material or coil that resists changes in current direction or magnitude.

  • Inductance can also be defined as the property of a coil in which electromagnetic force is induced due to variations in flux.

  • Inductors, which are coils of wire, are used to add inductance to a circuit and store energy.

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