(1) Insert iron core, displace it as far as possible toward the base, and apply current until the core reaches the center of the coil. The core will eject a few meters. (2) Insert copper core (hollow) about one inch forward of the center of the coil. Apply current to slowly eject the core. (3) Insert both cores about an inch forward of the center of the coil. Predict the results. Dramatic. Stand clear!!
Illustrate the force which can be exerted by a small electromagnet. Read More
Demonstrate an electromagnet. Read More
Demonstrate an electromagnet. Read More
Show that a small amount of energy can produce large magnetic forces
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Semi-quantitatively measure the magnetic field in the air gap of a magnet. Read More
Demonstrate the force exerted on the core of an electromagnet. Read More
Demonstrate the force exerted on the core of an electromagnet. Read More
Demonstrate the force on a solenoid core, and to contrast forces on magnetic and non-magnetic cores. Read More