A 60 V, 10 W lamp is to be run on 100 V, 60 Hz a.c. mains. Calculate the inductance of a chock required to be connected in series with it to work the bulb.

A 30 V, 90 W lamp is to be perated on a 120 V D.C. line. For proper glow, a resistor of ………….. ohm should be connected in series with the lamp.

If a 30 V, 90 W bulb is to be worked in 120 V line, the resistance to be connected in series with the bulb is

If a 30 V, 90 W bulb is to be worked in 120 V line, the resistance to be counnected in series with the bulb is

A 100 pF capacitor is connected to a 230 V, 50 Hz a.c. source, the r.m.s. value of the conduction current is

Calculate the current and resistance of a 100 W, 200V electric bulb.

With a resistance R connected in series with a galvanometer of resistance 100 Omega , it acts as a voltmeter of range 0-V. To double the range a resistance of 1000 Omega is to be connected in series with R. Then the value of R is ( Omega )

An ideal choke draws a current of 8A when connected to an AC supply of 100 V, 50 Hz. A pure resistor draws a current of 10 A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the AC source of 150 V, 40 Hz. The current in the circuit becomes.......................

An ideal choke draws a current of 8 A when connected to an AC supply of 100 V, 50 Hz. A pure resistor draws a current of 10 A when connected to the same source. The ideal choke and the resistor are connected in series and then connected to the AC source of 150 V, 40 Hz. The current in the circuit becomes