GEOLOGY

Detailed explanation-1: -The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.

Detailed explanation-2: -Doubling the number of coils doubles the mmf (ampere-turns): “By maintaining the same current and increasing the number of loops or turns of the coil, the strength of the magnetic field increases because each loop or turn of the coil sets up its own magnetic field.

Detailed explanation-3: -The more loops the coil has, the stronger the magnetic field, while the current is flowing. A magnet made from just a coil of wire isn’t very strong. But when you coil the wire around an iron nail, the magnetic domains inside the nail line up and make a strong, temporary magnet.

Detailed explanation-4: -An electromagnet is stronger if there are more turns in the coil of wire or there is more current flowing through it. A bigger bar or one made of material that is easier to magnetize also increases an electromagnet’s strength.

Detailed explanation-5: -You can add more coils on top of the first row, and this just adds more field strength. In technical terms, every coil of wire increases the “magnetic flux density” (strength) of your magnet.