Q76 · Practice questionComplex familiar4 marks
QUESTION 76 (4 marks)
A -turn coil has area . Its normal is parallel to a magnetic field that decreases uniformly from to zero in . Determine the magnitude of the induced EMF.
WORKED SOLUTION
4 marksPractice marking scheme
ANSWER
.
Worked solution
Initially, per turn. Finally, .
Determines initial magnetic flux.
Uses change in flux.
Applies Faraday’s law including turns.
Calculates 12.5 V.
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