Figure (a) shows a length of wire carrying a current i and bent into a circular coil of one turn. In Figure (b) the same length of wire has been bent to give a coil of 3 turns, each of 1/3 the original radius. (a) If B, and B, are the magnitudes of the magnet fields at the centers of the two coils, what is the ratio B/B,? (b) What is the ratio PHa, of the dipole moment magnitudes of the coils? (a) (6) (a) Number Units (b) Number lUnits
Figure (a) shows a length of wire carrying a current i and bent into a circular coil of one turn. In Figure (b) the same length of wire has been bent to give a coil of 3 turns, each of 1/3 the original radius. (a) If B, and B, are the magnitudes of the magnet fields at the centers of the two coils, what is the ratio B/B,? (b) What is the ratio PHa, of the dipole moment magnitudes of the coils? (a) (6) (a) Number Units (b) Number lUnits
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Transcribed Image Text:Figure (a) shows a length of wire carrying a current i and bent into a circular coil of one turn. In Figure (b) the same length of wire has been bent to give a coil of 3 turns, each of 1/3 the original radius. (a) If B, and B, are the magnitudes of the magnetic
fields at the centers of the two coils, what is the ratio Bp/B,? (b) What is the ratio Hp/Ha, of the dipole moment magnitudes of the coils?
(a)
(b)
(a) Number
Units
(b) Number
Units
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