PHY 2049 Midterm: University of Florida PHY 2049 exam2fall13
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Let"s use kirchoff"s loop rule for the upper loop, where we go around clockwise from point b: Let"s use kirchoff"s loop rule for the left loop, where we go around clockwise: First solve for the current in the circuit: Now let"s add the potential difference to go from point q to p: Vp = 4. 5 + 12 0. 15 10( In the shown figure, r1 = r2 = r3 = 50 , r4 = 100 , and the ideal battery has. The 3 resistors r2, r3, and r4 are in parallel with equivalent resistance: Then adding resistor r1 in series we have req=50+20=70 . An ion of charge q= +2e and unknown mass is sent into a region with a uniform magnetic field of magnitude. B=0. 5 t as shown in the figure. We can use the relation between momentum and radius of curvature for a particle moving in a magnetic field: mv = qbr.
