According to Ampere's Law, the line integral of the magnetic field B around a cl

Practice Questions

Q1
According to Ampere's Law, the line integral of the magnetic field B around a closed loop is equal to what?
  1. 0
  2. μ₀ times the total current through the loop
  3. μ₀ times the total charge
  4. None of the above

Questions & Step-by-Step Solutions

According to Ampere's Law, the line integral of the magnetic field B around a closed loop is equal to what?
  • Step 1: Understand that Ampere's Law relates the magnetic field (B) to electric current.
  • Step 2: Recognize that the line integral (∮B·dl) means you are adding up the magnetic field along a closed loop.
  • Step 3: Know that μ₀ is a constant called the permeability of free space, which helps relate magnetic fields to currents.
  • Step 4: Identify that I_enc represents the total electric current that is enclosed by the loop you are considering.
  • Step 5: Put it all together: Ampere's Law states that the total magnetic field around a closed loop is equal to μ₀ times the total current inside that loop.
  • Ampere's Law – Ampere's Law relates the magnetic field around a closed loop to the electric current passing through that loop.
  • Line Integral – The line integral of a vector field along a curve measures the cumulative effect of the field along that path.
  • Enclosed Current – I_enc represents the total current that passes through the surface bounded by the closed loop.
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