Question:
What are eddy currents? Give two applications of it.
What are eddy currents? Give two applications of it.
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Eddy currents can cause energy loss (heating), so laminations are used in transformer cores to reduce them.
Updated On: Oct 8, 2025
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Solution and Explanation
Step 1: Definition.
When a conductor is placed in a varying magnetic field, loops of induced current are produced in it. These circulating currents are called eddy currents.
Step 2: Cause.
They arise due to electromagnetic induction (Faraday’s law).
Step 3: Applications.
1. Induction furnace: Used for melting metals by heating due to strong eddy currents.
2. Electric brakes: Used in trains and roller-coasters; eddy currents provide magnetic damping.
Step 4: Conclusion.
Eddy currents, though sometimes a source of energy loss, are widely applied in heating and braking systems.
When a conductor is placed in a varying magnetic field, loops of induced current are produced in it. These circulating currents are called eddy currents.
Step 2: Cause.
They arise due to electromagnetic induction (Faraday’s law).
Step 3: Applications.
1. Induction furnace: Used for melting metals by heating due to strong eddy currents.
2. Electric brakes: Used in trains and roller-coasters; eddy currents provide magnetic damping.
Step 4: Conclusion.
Eddy currents, though sometimes a source of energy loss, are widely applied in heating and braking systems.
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