If a magnetic field of 0.1 T is perpendicular to a circular loop of radius 0.1 m

Practice Questions

Q1
If a magnetic field of 0.1 T is perpendicular to a circular loop of radius 0.1 m, what is the magnetic flux through the loop?
  1. 0.01 Wb
  2. 0.03 Wb
  3. 0.1 Wb
  4. 0.05 Wb

Questions & Step-by-Step Solutions

If a magnetic field of 0.1 T is perpendicular to a circular loop of radius 0.1 m, what is the magnetic flux through the loop?
  • Step 1: Identify the magnetic field strength (B). In this case, B = 0.1 T (Tesla).
  • Step 2: Identify the radius of the circular loop (r). Here, r = 0.1 m.
  • Step 3: Calculate the area (A) of the circular loop using the formula A = πr².
  • Step 4: Substitute the radius into the area formula: A = π(0.1)².
  • Step 5: Calculate (0.1)², which is 0.01. So, A = π * 0.01.
  • Step 6: Now, calculate the area: A = 0.01π m².
  • Step 7: Use the formula for magnetic flux (Φ): Φ = B * A.
  • Step 8: Substitute the values of B and A into the flux formula: Φ = 0.1 * 0.01π.
  • Step 9: Calculate the magnetic flux: Φ = 0.001π Wb.
  • Step 10: To get a numerical value, calculate 0.001 * π, which is approximately 0.00314 Wb.
  • Magnetic Flux – Magnetic flux is the product of the magnetic field (B) and the area (A) through which the field lines pass, calculated as Φ = B * A.
  • Area of a Circle – The area of a circle is calculated using the formula A = πr², where r is the radius of the circle.
  • Units of Magnetic Flux – Magnetic flux is measured in Weber (Wb), which is the unit of magnetic flux in the International System of Units (SI).
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