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Electromagnetic induction — Question 79

Original QCE Vault practice · 6 marks

Q79 · Practice questionComplex unfamiliar6 marks

QUESTION 79 (6 marks)

A generator coil has

80

turns, area

0.020\,\text{m}^2

and rotates at

50\,\text{Hz}

in a uniform

0.12\,\text{T}

magnetic field. If the flux through one turn is

\Phi=BA\cos(\omega t)

, derive an expression for the induced EMF and determine its maximum magnitude.

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