Choose the correct option.
Arectangular coil of copper wires is rotated in a magnetic field. Thedirection of the induced current changes once in each

(a) two revolutions

(b) one revolution

(c) half revolution

(d) one-fourth revolution

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Solution

(c) When a rectangular coil of copper is rotated in a magnetic field,the direction of the induced current in the coil changes once in eachhalf revolution. As a result, the direction of current in the coilremains the same.

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Similar questions

Choose the correct option.

A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each

(a) two revolutions	(b) one revolution
(c) half revolution	(d) one-fourth revolution

Match the following:

(i) Straight angle (a) Less than one-fourth of a revolution

(ii) Right angle (b) More than half a revolution

(iii) Acute angle (c) Half of a revolution

(iv) Obtuse angle (d) One-fourth of a revolution

(v) Reflex angle (e) Between of a revolution

(f) One complete revolution

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