A 50 W bulb is connected in
series with a room heater, is connected across that mains. If 50 W bulb is now replaced by 150 W bulb in each of the two cases, will the heat produced by heater by smaller, remain the same or be larger?

A 50 W bulb is connected in parallel with a room heater, is connected across that mains. If 50 W bulb is now replaced by 150 W bulb in each of the two cases, will the heat produced by heater by smaller, remain the same or be larger?

Which one is having more resistance,100 W bulb or a 50 W bulb?

A light bulb is rated 50 W for a 220 V supply. Find resistance of the bulb.

A 25 W and a 100 W bulbs are joined in parallel and connected to A.C. mains. Which will glow brighter?

A light bulb is rated 50 W for a 220 V supply. Find peak voltage of the source

An capacitor C, a variable resistor R and a bulb B are connected in series to the ac mains in circuits as shown in Fig. The bulb glows with some brightness. How will the glow of the bulb change if a dielectric slab is introduced between the plates of the capacitor, keeping resistance R to be the same.

Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In another set of three bulbs of the same wattage are connected in parallel to the source. Will the bulb in the two circuits glow with the same brightness? Justify your answer.

A 100 W-200 V bulb is connected to a 160 V supply. The actual power consumption would be

Two heater wires of the same dimensions are first connected in series and then in parallel to a source of supply. What will be the ratio of heat produced in the two cases?