Which electromagnet device with a movable iron core can be pulled into a coil?

Which electromagnet device with a movable iron core can be pulled into a coil?

• A. Push Button Switch
• B. Relays
• C. Solenoids
• D. Micro Switch

Answer: (C)

The main idea here is how a solenoid operates. A solenoid is an electromagnet designed to produce linear motion by pulling a movable iron core (the plunger or slug) into the coil when current flows. This magnetic pull converts electrical energy into straight-line motion, which is exactly what the description describes. Push-button and micro switches are purely mechanical actuators, and a relay uses a coil to move contacts, but the defining feature of a solenoid is that the iron core is drawn into the coil to create motion.

The main idea here is how a solenoid operates. A solenoid is an electromagnet designed to produce linear motion by pulling a movable iron core (the plunger or slug) into the coil when current flows. This magnetic pull converts electrical energy into straight-line motion, which is exactly what the description describes. Push-button and micro switches are purely mechanical actuators, and a relay uses a coil to move contacts, but the defining feature of a solenoid is that the iron core is drawn into the coil to create motion.