MONGU COLLEGE

posted by .

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.

• MONGU COLLEGE -

I cannot calculate the freq. unless the reactance of the inductor or capacitor is given. I will assume a 230v.- 60 Hz supply.

a 60 Hz.

b. Xl = 2pi*F*L = 6.28*60*4 = 1508 Ohms.
Xc = 1/(2p*F*C) = 1/(6.28*60*25*10^-6=
106 Ohms.
Z = R + j(Xl-Xc)
Z = 15 + j(1508-106)
Z = 15 + j1402 = Rectangular form.

tanA = Xl/R = 1402/15 = 93.5
A = 89.4o
Z = Xl/sinA = 1402/sin89.4=1402.1 Ohms
@ 89.4o = Polar form.
I = V/Z = 230/1402.1=0.164A @ (-89.4o)

c. V = I * Xl = 0.164 * 1508 = 247.3 V.

Similar Questions

1. College Physics

You have 20 and 80 (unit is the upside down U) resistors in a circuit with a 100 V battery. A)These resistors are parallel. Find the current through each resistor and the voltage drop across each resistor. B) These resistors are connected …
2. 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 …
3. Circuits

I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different frequencies. The voltage of the source is 2.5 V. The inductor is at the top and has an inductance of .200 …
4. Circuits

I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different frequencies. The voltage of the source is 2.5 V. The inductor is at the top and has an inductance of .200 …
5. 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 …
6. 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 …
7. MONGU COLLEGE

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.
8. Electronics

Two resistors of 15ohms and 5ohms are connected in parallel.this parallel combination is connected in a series with a third resistor of 10ohms.the whole circuit is then connected across a 40 volts supply. 1.determine the resistance …
9. Physics 112

A battery is connected in series with a R = 0.26 Ω resistor and an inductor, as shown in the figure below. The switch is closed at t = 0. The time constant of the circuit is τ = 0.10 s, and the maximum current in the circuit …
10. CIRCUIT

if three resistors are connected in series across a 12 V battery and the voltage drop across one resistor is 3 V and the voltage drop across the second resistor is 7 V, what is the voltage drop across the third resistor?

More Similar Questions