Question

A resistor R and an element X are connected in series to an Ac source of volatge. The voltage is found to lead the current is phase by pi/4. If X is replaced by another elemnet of Y the volatge lags behind the current by pi/4. (i) identify X and Y
(ii) When both X and Y are connected in series with R to the same source, will the power dissipated in circuit be maximum or min.? Justify

Answer 1

in first case inductor
and in seconds. capacitor

Answer 2

Answer:

Explanation:

If both elements x and y are connected in series with R, than power dissipation in the combination can be given as cosϕ < 1 for reactance of elements x and y are not equal. Hence power dissipation would be minimum.