alleryEddy 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.
Keep practising Electromagnetic Induction
Browse all Electromagnetic Induction questions for Karnataka PUC II, or explore more Physics topics.
Related questions
Match each quantity to its unitA horizontal conducting rod 0.5 m long moves at 10 m/s perpendicular to a 0.4 T magnetic fEnergy stored in an inductor carrying current I isIn a transformer, the ratio of secondary to primary voltage equalsMutual inductance M between two coils is defined such that the emf induced in coil 2 due tMotional emf induced in a straight conductor of length l moving with velocity v perpendicuSelf-inductance L of a coil is defined byMagnetic flux through a flat loop in a uniform field B is