Q117 / 125 · BITSAT 2013 · Physics

Eddy currents are produced when

Correct answer
A
a metal is kept in varying magnetic field
B
a metal is kept in steady magnetic field
C
a circular coil is placed in a magnetic field
D
through a circular coil, current is passed

Solution

Eddy can be created when a conductor is moving through a magnetic field, or when the magnetic field surrounding a stationary conductor is varying. Option A

Hence, the correct answer is option: 'A'.

More Electromagnetic Induction Questions

A conducting loop of radius is placed perpendicular to a uniform magnetic field of . The magnetic field is decreased to zero in at a steady 2023 (Memory Based Paper 1)Induced Electric Field
A battery connected to a coil of resistance through a switch, drives a constant current in the circuit. The switch is opened in . The emf in2023 (Memory Based Paper 2)Induced Electric Field
A conducting circular loop is placed in a uniform magnetic field, B = 0 . 025 T with its plane perpendicular to the loop. The radius of the 2017Induced Electric Field
A conducting circular loop is placed in a uniform magnetic field of with its plane perpendicular to the magnetic field. The radius of the lo2016Induced Electric Field
A conducting square loop is placed in a magnetic field with its plane perpendicular to the field. The sides of the loop start shrinking at a2015Induced Electric Field
A rectangular loop of length 2.5 m and width 2 m is placed at to a magnetic field of 4 T . The loop is removed from the field in 10 sec . Th2024 (Memory Based Paper 1)Magnetic Flux, Faraday's and Lenz law