Hi
I know next to nothing about electronic theory.
i am going to ask a very very elementary question which i have been searching the web for answer but to no avail, hope everyone has patience with me please.
What i know :
1) power is relative to voltage and current. that is, to get same power, either increase voltage or current. If voltage is to remain the same, if you increase current, power will increase.
2) If 2 x1.5V, 15A battaries are connected in
a) parellel, the voltage remains the same but current is x2.
b) series, voltage x2 but current remains the same.
hence power from parallel or series batteries connection are the same.
3) bulb will be equally bright if you connect 2x AA bat in parallel or series.
4) 2 x AA will be make a bulb brighter than 1 x AA.
what i don't understand is :
1) when someone designs a bulb, what are the considerations to determine what voltage or current to adopt when power (Watt) does not determine brightness.
similarly, for design of any simple DC electronics product, what do you use to decide if you require parallel or series battery to give same power
when one can vary either voltage or current. That is, why use eg 1.5V when 1.0V can be used by increasing the current ?
2) What goes into producing a bulb that will lead to an increase voltage/current requirement ?
Thank you
Jocey.
I know next to nothing about electronic theory.
i am going to ask a very very elementary question which i have been searching the web for answer but to no avail, hope everyone has patience with me please.
What i know :
1) power is relative to voltage and current. that is, to get same power, either increase voltage or current. If voltage is to remain the same, if you increase current, power will increase.
2) If 2 x1.5V, 15A battaries are connected in
a) parellel, the voltage remains the same but current is x2.
b) series, voltage x2 but current remains the same.
hence power from parallel or series batteries connection are the same.
3) bulb will be equally bright if you connect 2x AA bat in parallel or series.
4) 2 x AA will be make a bulb brighter than 1 x AA.
what i don't understand is :
1) when someone designs a bulb, what are the considerations to determine what voltage or current to adopt when power (Watt) does not determine brightness.
similarly, for design of any simple DC electronics product, what do you use to decide if you require parallel or series battery to give same power
when one can vary either voltage or current. That is, why use eg 1.5V when 1.0V can be used by increasing the current ?
2) What goes into producing a bulb that will lead to an increase voltage/current requirement ?
Thank you
Jocey.