dotpoint in motors. (2 Viewers)
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BlackJack
Vertigo!
Transformers...
Using equation P=VI,the conservation of energy suggests that power in the primary and secondary coil must be equal disregarding wastage, as power is the usage rate of energy over time..
therefore, when voltage changes, up or down between the primary circuit and the secondary, power must be conserved with the change in current. This involves understanding of the conservation of energy..
is this good enough?
Using equation P=VI,the conservation of energy suggests that power in the primary and secondary coil must be equal disregarding wastage, as power is the usage rate of energy over time..
therefore, when voltage changes, up or down between the primary circuit and the secondary, power must be conserved with the change in current. This involves understanding of the conservation of energy..
is this good enough?
-=«MÄLÅÇhïtÊ»=-
Gender: MALE!!!
Power is energy
Conservation law states u cant create or destroy energy, only transform
In 100% efficient transformer power in = power out
No power is lost
P=IV
The transformation occurs in the ratio of I and V
Conservation law states u cant create or destroy energy, only transform
In 100% efficient transformer power in = power out
No power is lost
P=IV
The transformation occurs in the ratio of I and V
so u mean, in a step up transformer, p=iv, since power is equal, and voltage is increased, therefore current in the secondary coil is decreased?
so does that mean when they using the transformer , p stay the same,and the value of current and voltage is constantly being alteerd?
so does that mean when they using the transformer , p stay the same,and the value of current and voltage is constantly being alteerd?
BlackJack
Vertigo!
Not constantly altered... They have a fixed ratio, because it is the ratio of the number of coils around the transformer that determines the change of voltage.
The voltage and current stays the same.
(unless you start changing them)...
The voltage and current stays the same.
(unless you start changing them)...
ok......
say from the power station
voltage is steppted up, p=iv, p stays the same, so that means the currnet has to be reduced in this case
then at the household, it's been stepped down, the voltage is reduced, where p still stays the same, dosen't that meanat this point current has been increased?
say from the power station
voltage is steppted up, p=iv, p stays the same, so that means the currnet has to be reduced in this case
then at the household, it's been stepped down, the voltage is reduced, where p still stays the same, dosen't that meanat this point current has been increased?
-=«MÄLÅÇhïtÊ»=-
Gender: MALE!!!
yes increased
but remember current is made up electrons, so the power station is not only sending 1 wire to ur house. The transmission lines split up to every other house. If u split up voltage in a parallet ciruit it remains the same, but if u split a wire into a 2 wires, the current will 1/2.
So wen u say 'increase', the ratio of current to V has increased, but the overall current from the generator has not
but remember current is made up electrons, so the power station is not only sending 1 wire to ur house. The transmission lines split up to every other house. If u split up voltage in a parallet ciruit it remains the same, but if u split a wire into a 2 wires, the current will 1/2.
So wen u say 'increase', the ratio of current to V has increased, but the overall current from the generator has not