- #1
khurram usman
- 87
- 0
alternating acceleration understanding...?
i have a basic understanding of this topic...i understand this thing when it is explained using a closed rectangular circuit in books...it is easy to imagine that in a small closed circuit the current first flows in one direction then in the other.
but i could not understand how can alternating current reach our homes ...i mean first we say that in one direction and after half a time period it moves in the other...so in a sense it should reach back its starting point...kindly explain this and improve my understanding
someone told me to view this as a progressive wave/transfer of energy...where energy goes from one maximum to other maximum...but what i don't uinderstand is how and when it changes it direction?
secondly i remeber someone telling me that a AC bulb blinks about 60 times in a minute...but obviously our eye can't detect that...now if i assume that progressive wave concept which i don't clealy undrstand how is this explained?
thirdly the alternating voltage will cause the current to alternate ...that is its direction and magnitude both change(since its a sine wave)then doesn't this magnitude changing affect the appliances...i mean why don't tube lights and bulbs glow sometimes brightly and sometimes dimly?
please provide me an explanation and a physical interpretation of these concepts
i have a basic understanding of this topic...i understand this thing when it is explained using a closed rectangular circuit in books...it is easy to imagine that in a small closed circuit the current first flows in one direction then in the other.
but i could not understand how can alternating current reach our homes ...i mean first we say that in one direction and after half a time period it moves in the other...so in a sense it should reach back its starting point...kindly explain this and improve my understanding
someone told me to view this as a progressive wave/transfer of energy...where energy goes from one maximum to other maximum...but what i don't uinderstand is how and when it changes it direction?
secondly i remeber someone telling me that a AC bulb blinks about 60 times in a minute...but obviously our eye can't detect that...now if i assume that progressive wave concept which i don't clealy undrstand how is this explained?
thirdly the alternating voltage will cause the current to alternate ...that is its direction and magnitude both change(since its a sine wave)then doesn't this magnitude changing affect the appliances...i mean why don't tube lights and bulbs glow sometimes brightly and sometimes dimly?
please provide me an explanation and a physical interpretation of these concepts