Eddy currents are
ASteady DC currents in straight wires
BCirculating induced currents in bulk conductors exposed to changing magnetic flux
CCurrents flowing only through superconductors
DCurrents in vacuum
Answer & Solution
Correct answer: B. Circulating induced currents in bulk conductors exposed to changing magnetic flux
Eddy currents arise when flux through a bulk conductor changes. They cause heating (used in induction cookers) and braking (electromagnetic brakes). Laminations in transformer cores REDUCE eddy losses.
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