Question

The region surrounding a magnet in which the influence of that magnet can be detected is called

• A. magnetic length
• B. magnetic dipole
• C. magnetic field
• D. magnetic pole strength

Hint:

Visualize the magnetic field lines around a bar magnet. These lines represent the direction and strength of the magnetic field, indicating the region where the magnet's influence is significant.

Answer 1

The Correct Option is C

Step 1: Understand the concept of magnetic influence.
A magnet exerts a force on other magnetic materials (like iron, nickel, cobalt) and on moving electric charges. This influence is not limited to the surface of the magnet but extends to the space surrounding it. Step 2: Analyze the given options. \begin{enumerate} \item Magnetic length: This refers to the distance between the two poles of a magnet. It is a property of the magnet itself, not the region of its influence. \item Magnetic dipole: A magnetic dipole is a closed circulation of electric current generating a magnetic field. A bar magnet has a magnetic dipole moment, but the term itself does not describe the region of influence. \item Magnetic field: A magnetic field is the region around a magnet where a magnetic force is exerted. It is a vector field that describes the magnetic influence of electric currents and magnetic materials. \item Magnetic pole strength: This is a measure of the intensity of a magnetic pole, determining the force it can exert on other magnetic poles. It is a property of the poles, not the entire region of influence. \end{enumerate} Step 3: Identify the term that describes the region of magnetic influence.
The region surrounding a magnet where its influence can be detected by the force it exerts is called the magnetic field.