If a wire is bent into a semicircular shape, what is the magnetic field at the c

Practice Questions

Q1
If a wire is bent into a semicircular shape, what is the magnetic field at the center of the semicircle due to current I?
  1. μ₀I/(4R)
  2. μ₀I/(2R)
  3. μ₀I/(πR)
  4. μ₀I/(8R)

Questions & Step-by-Step Solutions

If a wire is bent into a semicircular shape, what is the magnetic field at the center of the semicircle due to current I?
  • Step 1: Understand that we have a wire shaped like a semicircle.
  • Step 2: Recognize that the wire carries a current, denoted as I.
  • Step 3: Identify the center of the semicircle where we want to find the magnetic field.
  • Step 4: Recall the formula for the magnetic field at the center of a full circular loop, which is B = μ₀I/(2R), where R is the radius of the circle.
  • Step 5: Since we only have a semicircle, the magnetic field at the center will be half of that of a full circle.
  • Step 6: Therefore, the magnetic field at the center of the semicircle is B = (1/2) * (μ₀I/(2R)) = μ₀I/(4R).
  • Step 7: Conclude that the magnetic field at the center of the semicircle is B = μ₀I/(4R).
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