MONGU COLLEGE

posted by .

A 1200 ohms resistance of AC 0.07H inductance coil and a 0.001mF capacitor are in series across a 120V source determine.

a.frequency.
b.current.
c.impedance.

  • MONGU COLLEGE -

    Is the inductive reactance of the coil 1200 ohms? If so:

    a. Xl = 2pi*F*L = 1200 Ohms.
    F=Xl/(2pi*L)=1200/(6.28*0.07)=2728.4 Hz.

    b. Xc = 1/(2pi*F*C)
    Xc=1/(6.28*2728.4*0.001*10^-6)=58333 Ohms
    Z = Xl+ Xc=1200 + (-58333)=-57133 Ohms,
    Capacitive. = 57133@(-90) Deg.
    I = V/Z = 120/57133=2.1*10^-3A @ 90 Deg.

    c. Z was calculated in under b.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A student thrusts a 0,20T magnet with a cross sectional area of 2.0 cm^2 into a coil of 400 turns in 0,50s. The coil has a resistance of 30 ohms and it is connected in series with a moving coil meter having a resistantace of 170 ohms. …
  2. physics

    A student thrusts a 0,20T magnet with a cross sectional area of 2.0 cm^2 into a coil of 400 turns in 0,50s. The coil has a resistance of 30 ohms and it is connected in series with a moving coil meter having a resistantace of 170 ohms. …
  3. physics

    A 15.0 Ohms resistor is connected in series to a 120V generator and two 10.0 Ohms resistors that are connected in parallel to each other. -What is the total resistance of the load?
  4. physics

    A source of e.m.f 110v and frequency 60hz is connected to a resistor, an indicator and a capacitor in series. When the current in the capacitor is 2A.the potential difference across the resistor is 80v and that across the inductor …
  5. physics

    Need help on which formulas I use to solve problems?
  6. Physics, help please!

    Can the voltage across any of the three components in the R-L-C series circuit ever be larger than the maximum voltage supplied by the AC source?
  7. Physics

    When a resistor is connected across the terminals of an ac generator (112 V) that has a fixed frequency, there is a current of 0.500 A in the resistor. When an inductor is connected across the terminals of this same generator, there …
  8. Physics

    When a resistor is connected across the terminals of an ac generator (112 V) that has a fixed frequency, there is a current of 0.500 A in the resistor. When an inductor is connected across the terminals of this same generator, there …
  9. Doogleberry Physcis

    In an L-R-C series circuit, the resistance is 380 Ohms, the inductance is 0.400 H, and the capacitance is 2.00×10−2 uF. What is the resonant frequency of the circuit?
  10. MONGU COLLEGE

    A resistor of 15 ohms and an inductor of 4H and capacitor of 25 micro F are connected in series across 230V AC supply calculate. a.The frequency b.current c.voltage drop or pd across inductance.

More Similar Questions