Soal Latihan Kemagnetan

The correct answer is "medan magnet". The region around a magnet where its magnetic influence can still be detected is called the magnetic field or "medan magnet". This field is responsible for the magnetic forces and interactions between magnets and magnetic materials.

A solid object that can attract other objects is called a magnet.

The correct answer is "feromagnetik." Ferromagnetic materials are those that can be strongly attracted to a magnet. These materials have permanent magnetic properties and can retain their magnetization even after the external magnetic field is removed. Examples of ferromagnetic materials include iron, nickel, and cobalt.

An electromagnet is not made by inserting an iron rod into a coil. Instead, an electromagnet is created by passing an electric current through a coil of wire, which generates a magnetic field. The magnetic field is then amplified by placing a ferromagnetic material, such as an iron core, inside the coil. This process allows the electromagnet to attract and hold objects, and it is commonly used in various applications such as electric motors and magnetic locks.

Dalam pembuatan magnet dengan cara penggosokan, ujung A akan menjadi kutub selatan. Hal ini karena saat benda magnetik digosokkan ke benda non-magnetik, elektron-elektron dalam benda non-magnetik akan terpengaruh dan mengalami perubahan arah geraknya. Akibatnya, terbentuklah medan magnet yang menghasilkan kutub selatan pada ujung A.

The correct answer is "bagian tengah magnet bersifat netral" because the powder iron is attracted to the ends of the magnet due to the strong magnetic field concentrated at the ends. In the middle of the magnet, the magnetic field is weaker, so the iron powder does not stick to it.

Tembaga dapat ditarik lemah oleh magnet karena tembaga adalah logam yang memiliki sifat diamagnetik. Dalam sifat diamagnetik, material tidak memiliki medan magnetik internal yang signifikan sehingga tidak menunjukkan respons yang kuat terhadap medan magnet eksternal. Sebagai hasilnya, tembaga hanya sedikit tertarik oleh magnet dan dapat dengan mudah ditarik lemah oleh magnet.

The pattern of iron filings in the image indicates the presence of magnetic field lines and magnetic flux.

The correct answer is "garis-garis gaya magnet tidak pernah saling berpotongan". This statement is incorrect because magnetic field lines can intersect each other. Magnetic field lines represent the direction and strength of the magnetic field, and they can cross each other at any point. Therefore, this statement contradicts the nature of magnetic field lines.