Three electric bulbs of rating 60 W each are joined in series and then connected to electric mains. The power consumed by these three bulbs will be

Two bulbs of power 60 W and 100 W , joined in series , are connected to the electric mains . Which one of these two will glow brighter , and why ?

Two electric lamps of 40 W each are connected in parallel across the mains supply. Find the total power consumed by the two bulbs together.

A 100 W and a 500 W bulbs are joined in series and connected to the mains. Which bulb will glow brigher ?

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

Two electric bulbs of 40 watt each are connected in series. The power consumed by the combination will be

A room heater is rated 500 W, 220V . (a) Find the resistance of its coil. (b) If the supply voltage drops to 200 V , what will be the power consumed? ( c) If an electric bulb rated 100 W, 220 V is connected in series with this heater, what will be the power consumed by the heater and by the bulb when the supply is at 220 V ?

A room heater is rated 500 W, 220V . (a) Find the resistance of its coil. (b) If the supply voltage drops to 200 V , what will be the power consumed? ( c) If an electric bulb rated 100 W, 220 V is connected in series with this heater, what will be the power consumed by the heater and by the bulb when the supply is at 220 V ?