a) rms current: 5.63 A

b) power supplied by emf to *R*: 318 W

c) What value of capacitance should be added to maximize the power transferred to the motor? 176 microF

d) rms current: 8.00 A

e) power supplied by emf to *R*: 640 W

**c)** Evaluate numerically the quantity
( / )^{1/2}.
377 ohm

**f)** Evaluate numerically the characteristic impedance for RG58/U coax cable.
51.0 ohm

b) For *a* = 0.50 mm, *d* = 8.0 mm,
and *kappa* = 2.25, evaluate *C _{0}*.
23 pF/m

a) What is the emf of battery 1? 21.3 V

b) What is the terminal voltage of battery 2? 8.89 V

c) What is the power dissipated by the 12 ohm resistor? 14.8 W

d) What is the power supplied by the emf of battery 1? 42.6 W

a) Determine the initial current. 3.0 mA

b) Determine the charge *Q _{max}* on the capacitor when it is fully charged.
30 nC

c) Find the time required for the charge on the capacitor to reach 99% of *Q _{max}*.
46 microsec

d) Find the time required for the energy stored in the capacitor to reach 99% of its final value. 53 microsec

60 Hz | 50 Hz | |

omega | 377 rad/s | 314 rad/s |

R | 10 ohm | 10 ohm |

X_{L} |
50.1 ohm | 41.8 ohm |

X_{c} |
26.5 ohm | 31.8 ohm |

Z | 25.6 ohm | 14.1 ohm |

I_{rms} |
4.69 A | 8.51 A |

V_{C,rms} |
124 V | 271 V |

"http://www.physics.udel.edu/~watson/phys208/exams/questions-ans.html"

Last updated Dec. 15, 1997.

Copyright George Watson, Univ. of Delaware, 1997.