The electromotive force obtained from a simple dynamo may be increased by
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- A Increasing the cross-sectional area of the coil
- B Winding the coil on a soft-iron armature so as to decrease the magnetic flux through the coil
- C Increasing the speed of rotation
- D Making the field magnet longer
- E Using low-resistance copper coils
Correct Answer: Option C
Explanation:
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