What results from a wire carrying a current?
a
an electric field
b
beams of white light
c
the dispersion of photons
d
a magnetic field
d. a magnetic field. When an electric current flows through a wire, it produces a magnetic field around the wire. This is known as Ampere's law.
The correct answer is d) a magnetic field. When a wire carries an electric current, it generates a magnetic field around it. This phenomenon is described by Ampere's Law and is important in various practical applications such as electromagnets, electric motors, and transformers.
The correct answer is d) a magnetic field.
When an electric current flows through a wire, it creates a magnetic field around the wire. This phenomenon is known as electromagnetism and is described by Ampere's Law of electromagnetism. According to this law, the magnetic field strength is directly proportional to the magnitude of the electric current and the distance from the wire.
To understand why a magnetic field is produced by a wire carrying a current, you can use the "right-hand rule" for current-carrying wires. Imagine grasping the wire with your right hand, with your thumb pointing in the direction of the current flow. Your fingers will then curl around the wire in the direction of the magnetic field surrounding it. This rule helps demonstrate the relationship between the current direction and the resulting magnetic field.
In summary, when a wire carries an electric current, it generates a magnetic field around it. This phenomenon is fundamental to the principles of electromagnetism and has applications in various devices such as electromagnets, transformers, and motors.