PHYS 102 Final: Rice University PHYS 102 Final_07_MC_Solutions

• School: Rice University
• Department: Physics and Astronomy
• Course: PHYS 102
• Professor: All

Document Summary

Physics 102 spring 2007: final exam multiple-choice questions: the circuit on the left in the gure below contains a battery of potential v and a variable resistor. The plates of the parallel plate capacitor are pulled apart to twice the original distance, and a dielectric ( > 1) is completely inserted into the capacitor. What is the new frequency of oscillation for the circuit? (a) 2. 0. (b) q 2 (c) p (d) . 2 0: consider a solenoid with radius r and length l (r l). The magnetic eld at the center of the solenoid is b0. A second solenoid is constructed that has twice the radius, twice the length, and carries twice the current as the original solenoid, but has the same number of turns per meter. The magnetic eld at the center of the second solenoid is (a) b0/4. (b) b0/2. (c) b0. (d) 2 b0. (e) 4 b0.