Monday, August 24, 2009

Series circut


Series circut


>Series circut has only ONE patch for current to flow

>Curent is the same at any point



>Total resistance for two resistors in series.

Disadvantages : if one light bulb cannot work, current stop flowing.

Parallel Circut

Parallel circuit has more than one path for current to flow.

current from battery = sum of current in separate paths.

Voltages are equal across the branches.

Advantages : current become bigger
: if one lght cannot works other light bulb still light on.





Monday, August 10, 2009

Potential DIfference

what do you remeber on curent
> define : Electric is the rate of flow of electric charges
> Short From : I
> SI unit : A (ampere)
> instrument : Ammeter

In an electric circuit , the energy for the electric charges to move around a circuit is given by a electrical energy source such as the battery of the cell.

whe there is a potential difference across a conductor.

SI unit: volt (V)

Potential DIfference

what do you