A 60 V -10W lamp is to be run on AC supply of 100 V -50 cycle in series with a suitable capacitor .Find the capactiance of the capacitor that be needed for the purpose.

A 20 V - 5 W lamp is to run on 200 V- 50 Hz a.c. mains. Find the capacitance of a capacitor required to run the lamp.

A 10 V -10 W lamp is to run on 220 V -50 Hz AC mains . What will be the required value of capacitance of a capacitor to run the lamp ?

A diode is connected to 220V (rms) ac in series with a capacitor as shown in fig. The voltage across the capacitor is

A 50 W, 100V lamp is to be connected to an ac mains of 200V, 50 Hz. What capacitor is essential to be put in series with the lamp?

A 110 V, 60 W lamp is run from a 220 V AC mains using a capacitor in series with the lamp, instead of a resistor then the voltage across the capacitor is about:

A capacitor and resistor of 12 Omega are connected in series with an AC supply 100 V, 50 Hz . Calculate the capacitance of the capacitor if power factor of the RC circuit is 0.8.

A 60 V - 10 W electric lamp is to be run on 100 V - 60 Hz mains. Calculate the inductance of the choke coil required. If a resistor is to be used in place of choke coil to achieve the same result, calculate its value.

A 2 muF capacitor is connected across an AC power supply . Calculate the frequency of the supply if the capacitive reactance of the capacitor is 10 Omega .

A resistor and a capacitor are connected to an ac supply of 200 V, 50 Hz, in series. The current in the circuit is 2A. If the power consumed in the circuit is 100 W then the resistance in the circuit is