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Long straight wire

B = μ₀I/(2πr)

Where: B = magnetic field (T), I = moment of inertia (kg·m²) / current (A), μ₀ = permeability of free space (T·m/A), r = radius / distance (m)

Solved example

Given: I = 7, mu_0 = 5, r = 10
Find: B (magnetic field (T))

  1. Formula: B = I·μ₀/(2·π·r)
  2. Substitute the values: B = 5·7/(2·π·10)
  3. Result: B = 0.557042 T

Answer: B = 0.557042 T

Calculator

How to calculate Long straight wire

  1. Write down the formula: B = μ₀I/(2πr).
  2. Note the known values (I, μ₀, r).
  3. Substitute them and simplify to find B.
  4. Use the calculator above to solve for any letter.

Frequently asked questions

What is the formula for Long straight wire?

The formula is B = μ₀I/(2πr), where B = magnetic field (T), I = moment of inertia (kg·m²) / current (A), μ₀ = permeability of free space (T·m/A), r = radius / distance (m).

What is Long straight wire when I = 7, mu_0 = 5, r = 10?

B = 0.557042 T. Substitute the values into B = μ₀I/(2πr) and simplify.

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