(a) Compute the impedance of a series R-L-C circuit at angular frequencies of 1000, 750, and 500 rad/s. Take R = 200 ω, L = 0.900 H, and C = 2.00 μF . (b) Describe how the current amplitude varies as the angular frequency of the source is slowly reduced from 1000 rad/s to 500 rad/s. (c) What is the phase angle of the source voltage with respect to the current when ω = 1000 rad/s? (d) Construct a phasor diagram when ω = 1000 rad/s.
(a) Compute the impedance of a series R-L-C circuit at angular frequencies of 1000, 750, and 500 rad/s. Take R = 200 ω, L = 0.900 H, and C = 2.00 μF . (b) Describe how the current amplitude varies as the angular frequency of the source is slowly reduced from 1000 rad/s to 500 rad/s. (c) What is the phase angle of the source voltage with respect to the current when ω = 1000 rad/s? (d) Construct a phasor diagram when ω = 1000 rad/s.
(a) Compute the impedance of a series R-L-C circuit at angular frequencies of 1000, 750, and 500 rad/s. Take R = 200 ω, L = 0.900 H, and C = 2.00 μF. (b) Describe how the current amplitude varies as the angular frequency of the source is slowly reduced from 1000 rad/s to 500 rad/s. (c) What is the phase angle of the source voltage with respect to the current when ω = 1000 rad/s? (d) Construct a phasor diagram when ω = 1000 rad/s.
Checkpoint 4
The figure shows four orientations of an electric di-
pole in an external electric field. Rank the orienta-
tions according to (a) the magnitude of the torque
on the dipole and (b) the potential energy of the di-
pole, greatest first.
(1)
(2)
E
(4)
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Chapter 22 Solutions
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