An inductor and a resistor in series are connected to an A.C . supply of variable frequency. As freq

English

Gujarati

Hindi

7.Alternating Current

easy

An inductor and a resistor in series are connected to an $A.C$. supply of variable frequency. As the frequency of the source is increased, the phase angle between current and the potential difference across $L$ will

A

first increase and then decrease

B

first decrease and then increase

C

go on decreasing

D

go on increasing

(AIIMS-2010)

Solution

$\tan \,\theta \, = \,\frac{{{X_L}}}{R}$

Standard 12

Physics

Share

Similar Questions

Obtain an equation of current for $AC$ voltage applied to an inductor and draw a graph of $V$ and $I$.

medium

A particle, of mass $10^{-3} kg$ and charge $1.0 C$, is initially at rest. At time $t =0$, the particle comes under the influence of an electric field $\dot{E}( t )= E _0 \sin \omega t \hat{ i }$, where $E _0=1.0 N C ^{-1}$ and $\omega=10^3 rad s ^{-1}$. Consider the effect of only the electrical force on the particle. Then the maximum speed, in $m s ^{-1}$, attained by the particle at subsequent times is. . . . . .

hard

(IIT-2018)

The adjoining figure shows an $AC$ circuit with resistance $R$, inductance $L$ and source voltage $V_s$. Then

easy

A coil of negligible resistance is connected in series with $90 \Omega$ resistor across $120 \mathrm{~V}, 60 \mathrm{~Hz}$ supply. A voltmeter reads $36 \mathrm{~V}$ across resistance. Inductance of the coil is :

hard

(JEE MAIN-2024)

Consider the infinite ladder circuit shown below.For which angular frequency $\omega$ will the circuit behave like a pure inductance?

normal

(KVPY-2010)