Ampere's law give us the relationship between:
Correct answer: D. Current and magnetic field
- A. Force and velocity of charge
- B. Force and magnetic field
- C. Current and force
- D. Current and magnetic field
Explanation
Ampere's law is a fundamental law in electromagnetism that relates the circulation of the magnetic field around a closed loop to the current passing through the loop. It states that the line integral of the magnetic field (B) around a closed loop is equal to the product of the current (I) passing through the loop and a constant called the permeability of free space (μ₀). This law establishes a relationship between the current (I) and the magnetic field (B) produced by that current.
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About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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