1) Which scenario will result in the greatest change in fluxthrough a loop of wire. The magnetic field decreasing from 1.0 Tesla to 0 Tesla The magnetic field very slowly switching from +1.0 Tesla to -1.0 Tesla The magnetic field very quicklyswitching -0.5 Tesla to +0.5 Tesla The loop slowly rotating 90° in a fixed 1.0 Tesla field Explain: ODDD

6) B-field Curve. A circular ring of radius r = 0.10 m and resistance Ro 2.02 sits in a uniform magnetic field pointing out of the page. The graph shows the strength of that field as a function of time (a negative value indicates that the field is pointing into the page at that moment). (a) At what time (or times) is the largest current induced in the ring? (b) Betweent=2s and t = 3s is the induced current clockwise or counterclockwise? Explain. (c) Betweent tude? Explain. 2s and t = 3 s is the induced current increasing, decreasing, or constant in magni- (d) What is the induced current at t = 4.7 s? (e) What is the induced current at t= 4.0s? (f) Betweent 5s and t = 6s how is the induced current increasing, decreasing, or constant in magnitude? Explain. B (T) 0.3 0.2 0.1 0.0 t (s) -0.1 -0.2 1.0 2.0 3.0 4.0 5.0 6.0 •..

1. A straight wire of length 20 cm sweeps across a 0.95 T magnetic field with speed of 1.50 m/s. What is the maximum value of the electromotive force that can be induced in the wire?

3. The moving rod in the figure is 25.0 cm long and moves with a speed of 22.0 cm/s. If the magnetic field is uniform with a magnitude of 0.60 T, and the resistance of the circuit is 90.0 9, a) what is the induced current in the rod? Amp B