Find the value of phase lag/lead between the current and voltage in the given CLR circuit, fig. Without making any other change, find the value of additional capacitor, such that when joined switably to `C = 2 mu F`, would make the power factor of this circuit unity.

Without making any other change, find the value of the additional capacitor C_1 , to be connected in parallel with the capacitor C, in order to make the power factor of the circuit unity.

(i) Find the value of the phase difference between the current and the voltage in the series LCR circuit shown below. Which one leads in phase : current or voltage ? (ii) What making any other change, find the value of the additional capacitor C, to be connected in parallel with the capacitor C, in order to make the power factor of the circuit unity.

(i) Find the value of the phase difference between the current and the voltage in the series LCR circuit shown below. Which one leads in phase : current or voltage ? (ii) What making any other change, find the value of the additional capacitor C, to be connected in parallel with the capacitor C, in order to make the power factor of the circuit unity.

Find the value of the phase difference between the current and the voltage in the series LCR circuit shown below. Which one leads in phase:current or voltage?

For the LCR circuit, shown here, the current is observed to lead the applied voltage. An additional capacitor C' , when joined with the capacitor C present in the circuit, makes the power factor of the circuit unity. The capacitor C' must have been connected in:

A circuit draws 280 W from a 110V, 60Hz ac line. The current lags the voltage and the power factor is 0.5. Find the value of a capacitance which can be connected in series to make the power factor of the circuit unity.

What is the phase difference between voltage and current when the power factor in LCR series circuit is unity ?