Multiple choice general knowledge science & technology

A law which describes the contributions to a magnetic field by an electric current.

  1. Biot Savart Law

  2. Kirchoff' First Law

  3. Kirchoff' Second Law

  4. Dulong PetitLaw

  5. Charles' law
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A Correct answer
Explanation

The Biot-Savart Law (1820) quantitatively describes the magnetic field contribution from a current element: dB = (μ₀/4π) · I dl × r̂ / r². Kirchhoff's laws govern circuit behavior, Dulong-Petit law concerns heat capacity, and Charles' law is a gas law.

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