6.4. Electromagnetic Induction

Cards (32)

  • Faraday's Law states that the induced EMF in a conductor is proportional to the rate of change of magnetic flux.

    True
  • Electromagnetic induction is governed by Faraday's Law and Lenz's Law.
  • Arrange the steps to calculate induced EMF using Faraday's Law in the correct order:
    1️⃣ Identify Values
    2️⃣ Apply Formula
    3️⃣ Interpretation
  • The more turns in the coil, the greater the induced EMF because each turn experiences a change in magnetic flux.
  • The more turns in a coil, the greater the induced EMF.

    True
  • What is the formula for Faraday's Law?
    EMF = -N * dΦ/dt
  • Match the principle with its description:
    Faraday's Law ↔️ EMF proportional to flux change
    Lenz's Law ↔️ Induced current opposes change
  • What does Faraday's Law state about induced EMF?
    Proportional to rate of change of magnetic flux
  • What does dΦ/dt represent in Faraday's Law?
    Rate of change of magnetic flux
  • The faster the magnetic flux changes, the greater the induced EMF
  • Electromagnetic induction is the process of generating an electric current in a conductor by changing the magnetic field
  • Arrange the key phrases related to Faraday's Law in a logical order:
    1️⃣ Electromotive Force (EMF)
    2️⃣ Rate of Change of Magnetic Flux
    3️⃣ Magnetic Flux
    4️⃣ Faraday's Law Formula
  • If a magnet is moved into a coil, the induced current creates a magnetic field that opposes the motion of the magnet.

    True
  • Lenz's Law states that the induced current creates a magnetic field that opposes the change in the original magnetic field
  • What are the two key factors affecting the induced EMF in a conductor according to Faraday's Law?
    Number of turns, dΦ/dt
  • What are the two key factors that affect the induced electromotive force (EMF) in a conductor according to Faraday's Law?
    Number of turns, rate of change of magnetic flux
  • Match the factor with its description:
    Number of turns (N) ↔️ More turns increase induced EMF
    Rate of change of magnetic flux (dΦ/dt) ↔️ Faster change increases induced EMF
  • What is electromagnetic induction?
    Changing magnetic field induces current
  • What does Lenz's Law ensure in electromagnetic induction?
    Energy conservation
  • The term 'N' in Faraday's Law represents the number of turns in the coil.
    True
  • The induced EMF in a conductor is affected by the number of turns in the coil.
    True
  • Lenz's Law states that the direction of the induced current is such that it opposes the change in the magnetic field
  • What creates the magnetic field that opposes the original change in magnetic flux according to Lenz's Law?
    Induced current
  • What does Faraday's Law state about the induced EMF in a conductor?
    Proportional to magnetic flux
  • The negative sign in the induced EMF calculation indicates that the induced EMF opposes the change in magnetic flux.
    True
  • A faster rate of change of magnetic flux results in a greater induced EMF.

    True
  • The faster the magnetic flux changes, the greater the induced EMF
  • In Faraday's Law, 'N' represents the number of turns in the coil.
    True
  • Faraday's Law states that the induced EMF is proportional to the rate of change of magnetic flux.

    True
  • The formula for induced EMF in Faraday's Law is EMF = -N * dΦ/dt
  • The negative sign in Faraday's Law indicates the direction of the induced EMF opposes the change in magnetic flux, as per Lenz's Law
  • Lenz's Law ensures energy conservation during electromagnetic induction.

    True