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  • A circular coil expands radially in a region of magnetic field and no electromotive force is produced in the coil This can be because a the magnetic field is constant.

A circular coil expands radially in a region of magnetic field and no electromotive force is produced in the coil. This can be because
(a) the magnetic field is constant.
(b) the magnetic field is in the same plane as the circular coil and it may or may not vary.
(c) the magnetic field has a perpendicular (to the plane of the coil) component whose magnitude is decreasing suitably.
(d) there is a constant magnetic field in the perpendicular (to the plane of the coil) direction.

Answers (1)

Answer: The correct answers are the options (b, c)

When the magnetic flux cutting a cross-sectional area of a conductor changes w.r.t. the conductor only, it induces an EMF. In this particular case, there can be two possibilities, which are fulfilled by b and c.

 

 

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infoexpert21

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