CBSE - Electricity

The power of electric power station is 200 mega watt , the elect rical energy produced by it daily will be (1) 200 megawatt hour (2) 4800 megawatt hour (3) 4800 megawatt (4) 4800 joule

It is written 100 watt-250 volt on any bulb. Its resistance will be (1) 25000 ohm (2) 625 ohm (3) 25 ohm (4) 2.5 ohm

Out of two bulbs 50 W – 220 V and 100 W –220 V, which one will glow brighter (a) When connected in series (b) When connected in parallel (1) (a) 100 W, (b) 50 W (2) (a) 50W, (b) 100 W (3) (a) both will glow similar (b) 100 W (4) none of t he above

Suppose five resistances, each of 10 ohm, are provided t o you. You are free to get the desired value by combining them. The desired value will lie in between (1) 2 ohm to 50 ohm (2) 20 ohm to 40 ohm (3) 12 ohm to 50 ohm (4) 10 ohm to 60 ohm