What is the effect of inserting a ferromagnet inside a winding coil where current flows?

The effect is to Fill in the Blank 01 (increase/decrease) the magnetic field inside the coil compared to the field that would have been produced in free space. This also Fill in the Blank 02 (increases/decreases) the induced current.
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To understand the effect of inserting a ferromagnet inside a winding coil where current flows, we need to understand a few concepts.

1. Magnetic field inside a coil: When a current flows through a winding coil, it creates a magnetic field around it. The magnetic field's strength and direction depend on the magnitude and direction of the current.

2. Ferromagnetism: Ferromagnetic materials like iron, nickel, and cobalt have the ability to become magnetized when exposed to an external magnetic field. They have domains that align to create a strong magnetic field within the material.

Now, let's analyze the effects of inserting a ferromagnet inside a winding coil:

1. Effect on the magnetic field: When a ferromagnet is placed inside a winding coil, it increases the magnetic field inside the coil compared to the field that would have been produced in free space. This occurs because the ferromagnetic material becomes magnetized due to the coil's magnetic field. The domains in the ferromagnet align and add to the magnetic field generated by the coil, resulting in a stronger magnetic field.

2. Effect on the induced current: The presence of a ferromagnet inside a winding coil can also influence the induced current. When the magnetic field inside the coil is increased, it can enhance the magnetic flux passing through the coil's windings. According to Faraday's law of electromagnetic induction, a changing magnetic flux induces an electromotive force (EMF), which in turn generates an induced current. Therefore, the insertion of a ferromagnet can increase the induced current.

Overall, inserting a ferromagnet inside a winding coil where current flows increases the magnetic field inside the coil and can result in an increased induced current.