दो बल्ब (60W-220V) तथा (40W-220V) को के मेन्स से श्रेणीक्रम में जोड़ा जाता है। बल्बों की कुल शक्ति ज्ञात कीजिएः

60W-220V and 100W-220V bulbs are connected in series to 220V mains. The power consumption is more in the bulb of :

60W-220V and 100W-220V bulbs are connected in series to 220V mains. The power consumption is more in the bulb of :

A 60W-220V bulb and 100W-220V bulb are connected in parallel to main supply. Which bulb will draw more current?

Three bulbs of specifications 60W-220V, 100W-220V and 1000W-220V are connected in series. Which one will glow the brightest ?

Two electric bulbs A and B are marked 220 V , 40W and 220 V , 60 W respectively . Which of the two has a higher resistance ? Which bulb will glow brightly if they are connected series ?

(a) Define Electric power. An electrial device of resistance R is connected across a source of voltage V and draws a current I. Derive an expression for power in terms of current and resistance. (b) Tow electric bulbs rated 100W , 220V and 60W, 220V are connected in parallel to an electric mains of 220V . Find the current draw by the bulbs form the mains.

(a) Define Electric power. An electrial device of resistance R is connected across a source of voltage V and draws a current I. Derive an expression for power in terms of current and resistance. (b) Tow electric bulbs rated 100W , 220V and 60W, 220V are connected in parallel to an electric mains of 220V . Find the current draw by the bulbs form the mains.