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: -We can say that, the strength of the electromagnet is directly proportional to the number of turns in the coil. If you double the number of turns, you double the strength of the electromagnet.

Detailed explanation-3: -The more loops the coil has, the stronger the magnetic field, while the current is flowing.

Detailed explanation-4: -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-5: -By placing soft iron inside the solenoid. By increasing the number of turns of the coil. By increasing the current flowing through the solenoid.