CUET · PHYSICS · PYQ PAPER 2023
Identify the incorrect statement.
(A) Power meters work on the principle of Eddy currents.
(B) Induction furnace uses eddy currents to produce heat.
(C) Eddy currents can be used to produce braking force in moving trains.
(D) Eddy currents are produced in a steady magnetic field.
Choose the correct answer from the options given below :
- A (A), (B) and (D) only
- B (B), (C) and (D) only
- C (A) only
- D (D) only
Answer & Solution
Correct Answer
(D) (D) only
Step-by-step Solution
Detailed explanation
Eddy currents are induced by a changing magnetic flux, such as when a conductor moves through a field or when the field itself varies over time. A steady magnetic field with a stationary conductor does not produce any current. D) (D) only
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