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Electromagnetic induction — Question 74

Original QCE Vault practice · 5 marks

Q74 · Practice questionComplex familiar5 marks

QUESTION 74 (5 marks)

The magnetic flux through each turn of a

50

-turn coil varies with time as shown. From

t=1.0

to

2.0\,\text{s}

, the flux rises linearly from

2.0\,\text{mWb}

to

12.0\,\text{mWb}

; it is constant from

2.0

to

3.0\,\text{s}

and falls back to

2.0\,\text{mWb}

from

3.0

to

4.0\,\text{s}

. Determine the induced EMF in each of these three intervals, including the relative polarity.

Piecewise magnetic flux versus time graph

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