GEOLOGY

Detailed explanation-1: -One way to increase or decrease the strength of the magnetic field is to change the number of loops in the coil. The more loops you add, the stronger the field will become. The more loops you remove, the weaker the field will become.

Detailed explanation-2: -reversing polarity of the battery.

Detailed explanation-3: -There are two methods by which we can increase strength of magnetic field are: 1) By increasing the number of turns of wire in the coil. 2) By increasing the current flowing the coil.

Detailed explanation-4: -Thus, using fewer loops of wire per meter in the coil, decreasing the current in the wire and removing the iron core will decrease the strength of the magnetic field of an electromagnet.

Detailed explanation-5: -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. Was this answer helpful?