Home
Class 12
PHYSICS
An inductor and a bulb are connected in ...

An inductor and a bulb are connected in series to an AC source of 220V, 50Hz. 7C A current of 11A flows in the circuit and phase angle between voltage and current is `(pi)/(4)` radians. Calculate the impedance and inductance of the circuit

Text Solution

Verified by Experts

`V_(rms)=11 A phi =(pi)/(4)`
also `tan phi =(X_(L))/(R )`
`X_(L)=R(1)=R`
`R=(z)/sqrt(2)`
`=20/1.414`
put in eqn `rarr X_(L)=14.14 Omega`
or `OmegaL=14.14 or L`
`=(14.14)/(omega)`
=`(14.14)/(2xx31.42xx50)`
`L=(14.14)/(314.2)`
`L=0.045 H`
Promotional Banner

Topper's Solved these Questions

  • SOLVED PAPER (II PUC JULY 2016)

    OSWAAL PUBLICATION|Exercise PART C|8 Videos

  • SEMI-CONDUCTORS ELECTRONICS

    OSWAAL PUBLICATION|Exercise TOPIC -4 LOGIC GATES (NUMERICAL PROBLEMS)|4 Videos

  • SOLVED PAPER (II PUC MARCH-2016)

    OSWAAL PUBLICATION|Exercise PART-D|11 Videos

Similar Questions

Explore conceptually related problems

In L.C.R. circuit , phase difference between voltage and current can be

A 100 W bulb is connected to an AC source of 220 V, 50 HZ . Then the current flowing through the bulb is

A resistor of 200 Omega , an inductor of 25 mH and a capacitor of 15.0 mu F are connected in series to a 220 V, 50 Hz ac source. Calculate the current through the circuit. Also find the phase difference between the voltage across the source and the current.

Which two resistors are connected in series with a cell of emf 2V and negligible internal resistance, a current of (2/5)A flows in the circuit. When the resistances are in parallel, the main current is (5/3)A. Calculate the resistances.

A resistor, capacitor and heavy inductor are connected in series with a source of ac . Which of the following is true ? The current in circuit :

An inductor 1 H is connected actoss 220 V, 50 Hz supply. Peak value of current approximately

A resistance of 600 Omega , an inductor of 0.4 H and a capacitor of 0.10 muF are connected in series to an AC source of variable frequency. Find the frequency of AC souce for which current in the circuit is maximum. Also calculate the band width and quality factor for the circuit.

In an a.c. circuit, a resistance of R Omega is connected in series with an inductance L. If phase angle between voltage and current be 45^@ , the value of inductive reactance will be