hica (k 5.4rent in the circuit when the capacitor is empty to that when ruby A)

Question

hica (k 5.4rent in the circuit when the capacitor is empty to that when ruby A) 2.87 B) 2.32 ) is inserted between the plates? 430w- rad sec D) 0.348 2e ohm 7· Two 250- F capacitors and a 1.5-mH inductor are connected as shown in the figure. It is desired to "drive" the circuit by placing an ac generator in series with the inductor. Which one of the following generator output voltages will produce the largest current in the above circuit? Assume that Vis in volts when t is in seconds. A) V= 0.6 sin [(1.1×106 rad/s)1] B) V 0.6 sin [(1.2 x 103 rad/s) ] C) r= 1.2 sin (5.3 × 106 rads) 1] D) V= 1.2 sin [(2.3 x 105 rad/s) t] E) V 2.8 sin [(4.6 x 10 rad/s) ] 1 8. In th e circuit shown in the drawing, the generator supplies the same amount of rms current

Explanation / Answer

Natural angular frequency of the given circuit,

w = 1/sqrt(L*Ceq)

= 1/sqrt(L*2*C)

= 1/sqrt(1.5*10^-3*2*250*10^-6)

= 1.2*10^3 rad/s

so, when an ac source has same angular frequency as the ntaural angular frequency resosnance takes place and the current will be largest.

so, B) V = 0.6*sin(1.2*10^3 rad/s*t) is the correct answer.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.