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प्रश्न
A circular coil of 1000 turns each with area 1 m2 is rotated about its vertical diameter at the rate of one revolution per second in a uniform horizontal magnetic field of 0.07T. The maximum voltage generation will be ______ V.
विकल्प
220
440
540
340
MCQ
रिक्त स्थान भरें
उत्तर
A circular coil of 1000 turns each with area 1 m2 is rotated about its vertical diameter at the rate of one revolution per second in a uniform horizontal magnetic field of 0.07T. The maximum voltage generation will be 440 V.
Explanation:
e = `-("d"phi)/"dt"=-"d"/"dt"` (NBA cos ωt) = NBA ω sin ωt
So, |e|max = NBA ω
= 1000 × 0.07 × 1 × 2π × 1
= 140 π ≃ 440
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