Product Overview
Demonstrates the force between a moving magnet and a conducting ring and shows that Lenz’s law is a consequence of the law of conservation of energy.
Consists of two metal rings connected by an aluminum beam that can rotate freely on a steel pivot with brass cup bearing. One metal ring, about 5 cm in diameter, moves away when a strong magnet is thrust into the ring and then withdrawn a few times. A second ring, identical to the first but with a narrow gap, fails to respond to the motion of the magnet. Explanation: When a bar magnet moves into or out of the ring the magnetic flux will change. According to Lenz's law, a current will be induced in the ring to oppose the change. Students can verify the law by analyzing the movement of the ring.
You need a strong magnet suitable for showing this effect convincingly such as the catalog Item No. G-627200.
