The source of magnetic field is:
Correct answer: D. Current loop
- A. An isolated magnetic pole
- B. Static electric charge
- C. Nonmagnetic substance
- D. Current loop
Explanation
A current loop, such as a wire carrying electric current in a circular path, creates a magnetic field around it. This is known as Ampere's law, which states that a current-carrying conductor generates a magnetic field proportional to the current flowing through it.
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About Magnetic Flux Density
Magnetic flux density measures the magnetic force acting on a current carrying conductor or moving charge in a magnetic field. Work includes the relations B equals F divided by IL and F equals qvB, the tesla as its SI unit, field direction and the distinction between flux density and magnetic flux.
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