Questions in Current Electricity

Select	Question
	Two electric lamps of 40 watt each are connected in parallel. The power consumed by the combination will be
	Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct
	An electric bulb is rated 220 volt and 100 watt. Power consumed by it when operated on 110 volt is
	A 25 watt, 220 volt bulb and a 100 watt, 220 volt bulb are connected in series across a 220 volt lines. Which electric bulb will glow more brightly
	A resistor ${R_1}$ dissipates the power P when connected to a certain generator. If the resistor ${R_2}$ is put in series with ${R_1}$, the power dissipated by
	An electric fan and a heater are marked as 100 watt, 220 volt and 1000 watt, 220 volt respectively. The resistance of the heater is
	According to Joule's law, if the potential difference across a conductor having a material of specific resistance remains constant, then the heat produced in the conductor is directly proportional to
	Two heater wires of equal length are first connected in series and then in parallel. The ratio of heat produced in the two cases is
	Two bulbs of equal wattage, one having carbon filament and the other having a tungsten filament are connected in series to the mains, then
	Two identical heaters rated 220 volt, 1000 watt are placed in series with each other across 220 volt lines. If resistance do not change with temperature, then the combined power is