What is a solenoid? Draw a diagram with a solenoid connected in a circuit. How can you increase the strength of a solenoid?

A solenoid is a coil of wire that produces a magnetic field when current passes through it. Its strength can be increased by adding more turns, increasing current, or using a soft iron core. A solenoid is a cylindrical coil of insulated wire. When connected to a battery, it behaves like a bar magnet.

Ways to Increase Strength

• Increase the number of turns of the wire.
• Pass a stronger current through the coil.
• Insert a soft iron rod inside as a core.

Uses of Solenoid

• Electromagnets
• Electric bells
• Motors
• Relays