Physics

Eddy Currents

भंवर धाराएँ (एडी धाराएँ)

In Class 12 Physics, this topic explains how changing magnetic flux induces circulating currents inside bulk conductors, known as eddy currents. Students connect the idea to Faraday’s law and Lenz’s law, understand why these currents oppose the change that produces them, and examine factors affecting their strength, including conductivity, magnetic-field variation, and conductor geometry. The topic also covers useful applications such as electromagnetic braking, induction heating, and damping, along with energy losses in transformer cores and methods such as laminated cores to reduce them.