EGR 203 Electric and Electronic Circuits Assignment 7
- Suppose you have a Wheatstone bridge, shown below, with
R3 = R, the other resistances equal
to 10 kΩ and Vs = 5 V. Plot the bridge
voltage as a function of R for
5 kΩ ≤ R ≤ 20 kΩ.
- Given the circuit below, with R=22.8 kΩ and
C = 10 nF. Find the time constant τ
and the equation for the voltage across
the capacitor as a function of time if the voltage input is
2 V for t ≤ 0 and 5 V for t > 0. Plot the results
for a time of at least five time constants.
- Do the problem above in Multisim, using a pulse source and
both oscillocope simulation and transient analysis (see
RC_multisim.ppt).
- Suppose we have a coil of 600 turns of copper wire wrapped
around a wooden spool 1.2 cm in diameter and 0.8 cm long. Assume that
the relative permeability of wood is one. Find the inductance of
this coil
- If we have a current of 500 mA flowing through and inductance
of 12 mH, find the magnetic flux through the coil and the energy
stored in the magnetic field.
- Given two inductances, 8 mH and 24 mH, find the equivalent
inductance if they are connected in parallel and then if they are in
series.
- The current through a 250-mH inductor is given by
iL = 5 sin(25t) A. Calculate the expression
for the voltage across the inductor.
- Find the energy stored in each capacitor and inductor, under
steady-state conditions, in the circuit below.
Assume
V0 = 6 V, L = 2 H, C1 = 2
F, C2 = 1 F, C3 = 3 F,
R1 = 2 Ω, R2 = 4 Ω,
R3 = 6 Ω, and R4 = 8 Ω,
Maintained by John
Loomis, last updated 11 October 2012