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A closed loop of wire consists of a pair of equal semicircles, of radius 3.7 cm, lying in mutually perpendicular planes. The loop was formed by folding a plane circular loop along a diameter until the two halves became perpendicular. A uniform magnetic field →B of magnitude 76 mT is directed perpendicular to the fold diameter and makes equal angles 45∘ with the planes of the semicircles as shown in fig. The magnetic field is reduced to zero at a uniform rate during a time interval of 4.5 ms. Determine the magnitude of the induced emf in the loop during this interval. |
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Answer» A closed loop of wire consists of a pair of equal semicircles, of radius 3.7 cm, lying in mutually perpendicular planes. The loop was formed by folding a plane circular loop along a diameter until the two halves became perpendicular. A uniform magnetic field →B of magnitude 76 mT is directed perpendicular to the fold diameter and makes equal angles 45∘ with the planes of the semicircles as shown in fig. The magnetic field is reduced to zero at a uniform rate during a time interval of 4.5 ms. Determine the magnitude of the induced emf in the loop during this interval. |
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