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Theory of electricity pdf


theory of electricity pdf

Therefore if one light goes out, then only that branch of the circuit will be out.
This law states that the algebraic sum of the voltages in a closed loop is always equal to zero.
If we only knew the supply potential and the voltage drop of R1, we could use KVL to find the other voltage drop.
Since all of the lights are in-line with each other, if one goes out it causes an open circuit at that point.No current will flow to the other lights because of the open circuit path.V(supply) V(1) V(2) 0 or -5VDC (3VDC) (V(2).First we need to find the total resistance in the circuit.R1 had a higher resistance and received 3VDC of the total 5VDC supply and R2 received the rest or 2VDC.Electricity is everywhere; it lights our way, cooks our food and can even brush your teeth.Therefore today, most portable devices use DC power while dsc security system manual pk5501 power plants produce.The light bulb introduces enough resistance in a circuit to heat up the filament inside, causing light to be emitted.As mentioned previously, current is the measurement of the flow of charge in a circuit.The supply voltage was divided among the loads in proportion to the resistance each load carries.So now that we know the current in the loop is 7mA and in a series circuit that current is constant throughout, we can use Ohms law to calculate the voltage supplied to the speaker: V(speaker) I(loop) x R(speaker) or V(speaker) (7mA) x (430).One quick note, current will always try to take the path of least resistance.First, we need to understand what Series and Parallel circuits mean.Simply, resistance resists current flow.Normally the two points will be 10V and 0V (also known as ground but it can also be the difference between 5V and -5V, 20V and 10V, etc.The wire could overheat causing the worm to lose its glow and quite possibly everything else.


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