Suppose I have 10.2 W power source... Now how many 1 W bulb can I use here? Obviously I can use 10 bulbs at their best here... But can I use an eleventh one? Usually we do it like this 10.2/1=10.2~10 but my ques is there is some power left here... So why can't we use one more? This will result in that bulb glowing dim? I am thinking maybe all of the 11 bulb will then glow dimmer... Maybe that's why we always take the floor of the number we get... Am I right?