Applied Electricity Paper 2 , Nov/Dec. 2014  
Questions:   1 2 3 4 5 6   Main
General Comments

Question 2

(a) Define the following terms as applied to magnetic circuit:
(i) magnetic field;
(ii) magnetic flux.
(b) A conductor of length 0.4 m moves with a velocity of 2 m/s at an angle to a magnetic field of flux density 0.9 T. If an e.m.f. of 0.5 V was induced in it, calculate the angle of movement of the conductor relative to the magnetic field.




The expected answers were:
(a) (i) Magnetic field is a region of space where magnetic effect is experienced.
(Accept any other reasonable definition)
(ii) Magnetic flux is the total number of lines of flux threading through a magnetic
(Accept any other reasonable definition)
(b) e = Blvsin volts sin =
sin = = 0.6944
= 43.980
The question was on Magnetic field and Electromagnetism. The question was
attempted by many candidates who could not define the terms nor get the
calculation right. The candidates’ performance was not encouraging.


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