Exercise 12 - Electric circuits RC, RL and RLC

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Exercise 12 - Electric circuits RC, RL and RLC
CONTRIBUTIONS/e_42_3_008.html
In an RC series circuit of Fig. 31-20 below e = 11.0 V, R = 1.42 MW, and C = 1.80 mF. (a) Calculate the
time constant. (b) Find the maximum charge that will appear on the capacitor during the charging. (c)
How long does it take for the charge to build up to 15.5 mC?
CONTRIBUTIONS/e_51_3_001.html
A circular coil has a 10.3 cm radius and consists of 34 closely wound turns of wire. An externally
produced magnetic field of 2.62 mT is perpendicular to the coil. (a) If no current is in the coil, what is the
number of flux linkages, NFB, for the solenoid.
(b) When the current in the coil is 3.77 A in a certain direction, the net flux through the coil is found to
vanish. Find the inductance of the coil.
The inductance of a closely wound N-turn coil is such that an emf of 3.0 mV is induced when the current
changes at the rate of 5.0 A/s. A steady state current of 8.0 A produces a magnetic flux of 40 mWb
through each turn. (a) Calculate the inductance of the coil. (b) How many turns does the coil have?
A toroid
having a 5.20 cm square cross-section and an inside radius of 15.3 cm has 536 turns of wire and carries a
current of 810 mA. Calculate the magnetic flux through a cross-section.
CONTRIBUTIONS/e_51_3_004.html
In Fig. 36-19 below, e = 100 V, R1 = 10 W, R2 = 20 W, R3 = 30 W, and L = 2.0 H. Find the values of i1
and i2
(a) immediately after switch S is closed, (b) a long time later, (c) immediately after switch S is opened
again, and (d) a long time later.
CONTRIBUTIONS/e_51_3_007.html
In the circuit shown in Fig. 36-22 below, the switch has been in position a for a very long time before it is
thrown to position b. (a) Calculate the frequency of the resulting oscillating current. (b) What will be the
amplitude of the current oscillations?
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