Homework Help: physics

Posted by seema on Tuesday, May 4, 2010 at 2:24am.

A series RCL contains 150 ohm resistor, a 1.75x10^-6F capcitor and inductance of inductor 0.035H and voltage of generator 60.0 Hz. Determine its total impedance.
a) 1500 ohm
b) 1900 ohm
c) 1700 ohm
d) 500 ohm
e) 300 ohm

physics - drwls, Tuesday, May 4, 2010 at 7:15am
The angular frerquency is w = 2 pi f = 377 rad/s.

Total impedance is
Z = sqrt [R^2 + (wL - 1/(wC))^2]
= sqrt[150^2 + (13.2 - 1516)^2]
= sqrt[150^2 + 1503]^2] = 1510 ohms

a) is the closest to the correct answer. The capacitive reactance dominates.

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