Home
Class 12
PHYSICS
(a) Draw graphs showing the variations ...

(a) Draw graphs showing the variations of inductive reactnace and capacitive reactance with frequency of the applied ac source .
(b) Draw the phasor diagram for a series RC circuit connected to an ac source.
(c ) An alternating voltage of 220 V is applied across a device X , a current of 0.25 A flows , which lag behind the applied voltage in phase by `(pi)/(2)` radian . If the same voltage is applied across another device Y , the same current flows but now it is in phase with the applied voltage .
(i) Name the devices X and Y.
(ii) Calculate the current flowing in the circuit when the same voltage is applied across the series combination of X and Y.

Promotional Banner

Similar Questions

Explore conceptually related problems

When an alternating voltage of 220 V is applied across a device P , a current of 0.25 A flows through the circuit and it leads the applied voltage by a angle pi/2 radian. When the same voltage source is connected across another device Q , the same current is observed in the circuit but in phase with the applied voltage. What is the current when the same source is connected across a series combination of P and Q ?

When an alternating voltage of 220 V is applied across a device P , a current of 0.25 A flows through the circuit and it leads the applied voltage by a angle pi/2 radian. When the same voltage source is connected across another device Q , the same current is observed in the circuit but in phase with the applied voltage. What is the current when the same source is connected across a series combination of P and Q ?

Draw a labelled graph showing the variation of inductive reactance (X_(L)) verses frequency (f)

Phasor diagram of a series AC circuit is shown in figureure. Then,

Draw a labelled graph showing variation of impedance of a series LCR circuit with frequency of the a.c. supply.

When an AC voltage of 220 V is applied to the capacitor C

When an AC voltage of 220 V is applied to the capacitor C

In the following circuit the current is in phase with the applied voltage. Therefore, the current in the circuit and the frequency of the source voltage respectively, are

A circuit contains resistance R and an inductance L in series. An alternating voltage V=V_0sinomegat is applied across it. The currents in R and L respectively will be .

A circuit contains resistance R and an inductance L in series. An alternating voltage V=V_0sinomegat is applied across it. The currents in R and L respectively will be .