Question

1. In a cyclotron, the potential difference between the dees (between two "D"-shaped electrodes) oscillates with a period given by T = 27- QR If q, B and m have units of coulombs, teslas, nd kilograms, respectively then the expression to the right of the equal sign has units of A) seconds; B) meters; m C) D) Tesla; 2. Two students rotate a wire connected to a voltmeter. The wire is held slack, so that it sags with a large are in it and the sag in the wire is 0.8m. If the Earths magnetic field is 0.5G = 0.5.10 T and the angular speed w of the wire is 3.4 ", the motional emf generated by rotating the wire is then A) 0.08V; B) 3.4 . 10-4v; c) 7.0.10-2V; D) 2.9. 10-6v;

Answer 1

Given that To 2am q3 here me mass q= change B= magnetic field density ay climension- - ml - CA'T'I CABO B = to [MIOTA']

وي -T ۱ CAGIMIOTA) so TECT!] so it is sec option CAD is right 80

Tie Brow that motional emf is given by ez wie? 2 - givere B=0-56= 0.5X15Y I wz 3-45'or 3.442 so w arhod W= 2*WE 2KK 3.9=21-352 rad S 80 W= 21.352 radisectos es 0.8 m so put values- e = 21.352 x 0-5X154 x 20.82 . 2 e- 3-41x16" volt so option (B) is right in