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it's me again... sorry but this is the only place where I learn most of my physics from... pls kindly check my answer and for the last part... I found the angle but don't know how to convert it to (rad)... pls guide me...thanks

A series RCL circuit with L= 6.5 mH, C=3.7uF, and R = 5.5ohm is driven by a generator with a maximum emf of 197 V and a variable angular frequency w.

(a) Find the resonant frequency . (Unit: rad/s)

6.45E3 rad/s

(b) Find I(rms) at resonance when w=7.0E3 rad/s . (Unit: A)

25.3 A

(c) Find X(c) when w=7.0E3 rad/s. (Unit: ohm)

38.6 ohm

(d) Find X(L) when w=7.0E3 rad/s. (Unit: ohm)

45.5 ohm

(e) Find Z when w=7.0E3 rad/s. (Unit: ohm)

8.82 phm

(f) Find I(rms) when w=7.0E3 rad/s. (Unit: A)

15.8 A

(g) Find the phase angle when w=7.0E3 rad/s. (Unit: rad)

phase angle = inverse tan ((45.5-38.6) / 5.5) = 51.4

answer: I found the angle to be 51.4 degrees but how do I convert it to unit - rad?

thanks

cseet

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# Homework Help: It's me again. need somebody to check my answer

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