Quizbank/Electricity and Magnetism (calculus based)/QBCh14

QB153086031104

QB:Ch 14:V1
QB153086031104 1) Suppose switch S1 is suddenly closed at time t=0 in the figure shown. What is the current at t =0.741 s if &epsilon; = 7.36 V, R = 5.33 &Omega;, and L = 1.27 H?
 * a) 7.635E-01 V
 * b) 9.162E-01 V
 * c) 1.099E+00 V
 * d) 1.319E+00 V
 * e) 1.583E+00 V

2) An induced emf of 6.78V is measured across a coil of 58 closely wound turns while the current throuth it increases uniformly from 0.0 to 3.98A in 0.726s. What is the self-inductance of the coil?
 * a) 1.022E+00 H
 * b) 1.124E+00 H
 * c) 1.237E+00 H
 * d) 1.360E+00 H
 * e) 1.496E+00 H

3) A washer has an inner diameter of 2.75 cm and an outer diamter of 4.62 cm. The thickness is $$h=Cr^{-n}$$ where $$r$$ is measured in cm, $$C=3.66mm$$, and $$n=2.61$$. What is the volume of the washer?
 * a) 6.960E-01 cm3
 * b) 7.656E-01 cm3
 * c) 8.421E-01 cm3
 * d) 9.264E-01 cm3
 * e) 1.019E+00 cm3