parallel and series
TRANSCRIPT
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Parallel and Series Connection Of
Lighting Circuit
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A simple circuit has one appliance (resistor) and only one path for the current to flow.
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But if there is more than one appliance there are two different ways to circuit them.
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If there is only one path for the current you have a
series circuit.
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With a series circuit, if one appliance is removed the circuit is opened by a gap. The other appliance goes off because current can’t flow to it.
A gap opens the circuit and stops the flow of current
Light is off
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But we could make a circuit with more than one path for the current.
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Then if one light is gone the other can stay on.
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Then if one light is gone the other can stay on.
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Then if one light is gone the other can stay on.
This is called a
parallel circuit.
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Series Circuit
A series circuit is one that connects an electrical source with its components one after another, forming one single loop.
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Series Circuit
• There is only one path for the current to flow through.
• The current flows through the first bulb, then through the next bulb, to light up all the bulbs.
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Parallel circuit
A parallel circuit is one that splits into two or more branches.
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Parallel circuit
• There is more than one path for the current to flow through.
• Some current passes through one bulb and the rest flows through the other bulb.
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Disadventages of series circuit are:
If one lamp removed (dropped) then otherlights go out.
Flame lights with each other is not as obvious.The farther from the power source
increasingly dim lights.
Adventage of series circuit is:
Saving wiring and switch (cost-effective).If several lamps are connected in series
they will all be switched on and off together by a switch connected anywhere in the circuit.
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Disadventage of parallel electrical circuit is:
Wasteful cable and switch.
Adventages of parallel circuit are:
It allows each lamp to be turned on or off without affecting the others.
If one lamp blows, the others stay on. Each lamp has the same (full) voltage; this
may be important if you have a 110V supply say, and each lamp is designed for 110V.
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What kind of circuit is more commonly used?
Parallel circuit
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Why use parallel circuit in the household lighting?
If one bulb is damaged or switched off, the other bulb can still work.
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Which type of lighting circuit connection has voltage is divided equally between the lamps? ( assuming they are all identical).
Series circuit
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Review:
What is the name for a circuit that has only one path for current to flow?
Series circuit
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Review:
What happens to the lights in a series circuit if one light goes off? And why?
All the lights go off. Because of the gap. There is no other path for the current.
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Review:
What happens when one light goes out in a parallel circuit?
The other lights can stay on.