A generator is made from 100 turn coil, 3cm by 4 cm placed in a magnetic field of strength 0.1T. The coil rotates at 50 rev/sec. At a position when the magnetic field is perpendicular to the coil, calculate:
i) the amount of magnetic flux that passes through each turn
ii) the angular velocity of the coil and
iii) the peak voltage generated by the coil as it rotates
Source: Fiji Seventh Form Examination, 2006.
Problem is that the examiner gave answer to "ii)" as 1971.92 rad/sec. Which according to me seems incorrect.
But in the examiners report, he clear said that "100pi rad/sec" is not the correct answer.
27. August 2010 at 8:44 am
Since there are 2π radians in one rev, I don’t see how it could be anything other than 100π rad/sec
27. August 2010 at 8:44 am
♣ additional details! this was the answer of a VIP’s daughter; and examiner belongs to his party! Hence 100pi rad/s is wrong; and any other boolshyt of hers is correct!