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 ε = 7.36 V , R = 5.33 Ω, 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 $h=C{r}^{-n}$ 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