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| Numerical 05 |
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| 05. Find the EMF in a coil of 50 turns, each of area 80 cm2 when making 1800 revolutions per minute in a uniform field of flux density 6 x 10-3 T. |
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| Suggested solution: |
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| N = 50, A = 80 cm2= 80 x 10-4 m2, |
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| Area swept out in 1 second, dA = 80 x 10-4 m2 x 30 |
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| Rate of change of magnetic flux through 50 turns = |
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| = -0.072 V or - 72 mV |
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