हिंदी

The potential difference across the resistor is 160 V and that across the inductor is 120 V. Find the effective value of the applied voltage. If the effective current in the circuit is 1⋅0 A, - Physics

Advertisements
Advertisements

प्रश्न

The potential difference across the resistor is 160 V and that across the inductor is 120 V. Find the effective value of the applied voltage. If the effective current in the circuit is 1⋅0 A, calculate the total impedance of the circuit.

संक्षेप में उत्तर

उत्तर

We have,

VR = 160 V
VL = 120 V

`"V"_"net" = sqrt((160)^2 + (120)^2)`

` = 10 sqrt(256 + 144)`

` = 10 sqrt400`

` = 10 xx 20 "V"`

Vnet = 200 V

Inet = 1 A

`"Z" = "V"/"I" = 200 Ω`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2018-2019 (March) 55/3/1

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Draw a graph to show variation of capacitive-reactance with frequency in an a.c. circuit.


An inductor L of inductance XL is connected in series with a bulb B and an ac source. How would brightness of the bulb change when (i) number of turn in the inductor is reduced, (ii) an iron rod is inserted in the inductor and (iii) a capacitor of reactance XC = XL is inserted in series in the circuit? Justify your answer in each case.


A capacitor of capacitance 0.5 μF is connected to a source of alternating e.m.f. of frequency 100 Hz. What is the capacitive reactance? (Π = 3.142)


A light bulb is rated at 120 W for a 220 V a.c. supply. Calculate the resistance of the bulb.


A light bulb is rated 100 W for 220 V ac supply of 50 Hz. Calculate

(i) The resistance of the bulb;

(ii) The rms current through the bulb.


An AC source is connected to a capacitor. Will the rms current increase, decrease or remain constant if a dielectric slab is inserted into the capacitor?


The reactance of a circuit is zero. It is possible that the circuit contains
(a) an inductor and a capacitor
(b) an inductor but no capacitor
(c) a capacitor but no inductor
(d) neither an inductor nor a capacitor


(i) An alternating emf of 200 V, 50 Hz is applied to an L-R ciruit, having a resistance R of 10 Ω and an  inductance L of 0.05H connected in series. Calculate : 

(1) Impedance

(2) Current flowing in the circuit 

(ii) Draw a labelled graph showing the variation of inductive reactance (`X_L`) verses frequency (`f`) .


A series combination of an inductor (L), capacitor (C) and a resistor (R) is connected across an ac source of emf of peak value E0, and angular frequency (ω). Plot a graph to show variation of impedance of the circuit with angular frequency (ω).


In a pure capacitive circuit if the frequency of ac source is doubled, then its capacitive reactance will be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×