Question

Energy and Forces Unit Test
19 of 2019 of 20 Items






























Question
Using a simple model of an electromagnet, describe the factors that increase the magnetic field strength of an electromagnet.(2 points)

Answer 1

To increase the magnetic field strength of an electromagnet, the following factors can be considered:

1. **Number of Turns of Wire**: Increasing the number of turns of wire coiled around the core (usually made of ferromagnetic material) enhances the magnetic field strength. Each loop of wire contributes to the overall magnetic field, so more turns result in a stronger magnetic field.

2. **Current Through the Wire**: Increasing the electric current flowing through the wire also increases the magnetic field strength. The magnetic field strength is directly proportional to the current; therefore, a higher current generates a stronger magnetic field.

These two factors are fundamental in enhancing the performance of an electromagnet. Additional factors such as using a better ferromagnetic core material and reducing the air gap in the magnetic circuit can further enhance the magnetic field.