0
Circuits
Overachieving and under-appreciated, circuits are the foundation that our technological society is built on. Now's your chance to find out not only how they work, but why. Questions regarding the physics behind voltage, resistance, capacitance, inductance, transistors, LEDs, switches, and power supplies; and how they're used to create analog and digital circuits, should be directed here.
1,646 Questions
How do you convert a 240 volt circuit to 110 volt?
By asking this question you are probably not quite ready to take on this particular task. Really, don't do this one yourself. Electricity is far too dangerous to handle if you have not been trained how to do this work. If you use the wrong size and type of cable for the job and/or put just one wire in the wrong place, you risk being killed by electrocution or you could even start a house fire. How to do this job depends entirely on the Wiring Codes or Regulations for the locality (Town/County/State) and on the exact location of the electrical equipment you wish to be installed. If situated anywhere that is subject to water splashes, water spray, dampness or humidity - such as in any room supplied with running water pipes, like a kitchen, laundry room, bathroom, shower room, etc., or in a workshop, or garage (or anywhere outside a building in the open air, such as along an outside wall - or a pool-side area) in many places nowadays it is actually illegal to attempt to do this kind of work unless you are already a licensed electrician. If you get any other answer here, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or even their life. <><><> As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed. Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What parts of the cell are used to connect a electrochemical cell to a circuit?
The nodes of the electrochemical cell are called the electrodes. The Cathode is the + end (of a battery). Negative charge enters through it. The - end is called the anode.
What is the resistance of a fuse bulb?
A lamp has two resistances: a 'hot' resistance (its operating resistance) and its 'cold' resistance (its resistance when switched off), and the hot resistance is significantly higher than its cold resistance.
You can calculate its 'hot' resistance from its rated power and its rated voltage (assuming that it is being supplied at its rated voltage), by manipulating the following equation, to make Rthe subject: P= V2/R
You will, though, have to measure its cold resistance.
Do you use Parallel circuit at homes and schools?
Every outlet in a home or a school is in parallel with every other outlet in the same
home or school, and also very possibly with every outlet in several other buildings
nearby. Every time you plug something into an outlet, you're connecting that thing
in parallel with every other electrical thing that's plugged into any of those others.
What happens if there is a break in a serious circuit?
A break in an electrical circuit will cause the circuit's load to stop operating.
The pressure that pushes the current
Answer from University Physics Ed 11Voltage is the potential Vab of a with respect to b, which equals the work done by the electric force when a unit charge moves from a to b.
1 Volt = 1 joule/column b
What is difference between battery and mains electricity?
Mains supply provides alternative current while battery provides direct current.
the 4 colour resistor colour code is thus:
black = 0
brown = 1
red = 2
orange = 3
yellow =4
green = 5
blue = 6
violet = 7
grey = 8
white = 9
the first two numbers are found directly on the table.
the third number is not the number, but the number of zeros at the end.
therefore the value is yellow = 4, green = 5, and brown equals 1 zero, so the total is 450 ohms.
the gold band indicates tolerance. gold is by far the most common, and indicates a tolerance of +/- 5%. therefore the actual value of the resistor could be anywhere between 427.5 and 472.5.
It is my understanding that the 80286 has a 16-bit data bus. This was a doubling of the original 8086/8088 processors.
What are necessary parts of a circuit?
1. You need a power source
2. You need a load. Anything from a single resistor to a whole network of resistors.
3. You need wiring to connect the power source to the load or loads.
What is the name of a series circuit?
An electric circuit connected so that current passes through each circuit element in turn without branching.
What is the most important component of electric circuit and why?
That's a matter of opinion. Here's mine:
The most important component of an electric circuit is the power supply.
Because without it, no other component of the circuit does anything.
There are two types of circuits: series, and parallel. In a series circuit, electricity flows through all components of the circuit in a series. This means it flows from the power source, through all the components as a whole, then back to the source. A parallel circuit, on the other hand has the electricity flow through the components separately. Power flows from the source to each individual component individually, then back to the source. In a series circuit, if one component is missing or broken, the circuit will not function. With a parallel circuit, on the other hand, if a part is missing, or broken, all the other components will still work.
A heat sink is a device to improve the purity of the electrons in an electrical circuit?
There is no such thing as the "purity of electrons". A heat sink is used to keep a device reasonably cold.
Which component is designed to remove high-voltage spikes and surges from a power line so that they do not damage a computer system?
Give the characteristics of a parallel circuit?
-- The voltage across every circuit element is the same, and is equal to the power supply voltage.
-- The current through each circuit element is in inverse proportion to its impedance.
-- The sum of the currents through all circuit elements is equal to the power supply current.
Who invented the first electric circuit?
Who was first is unknown, but both Ewald Georg von Kleist and Pieter van Musschenbroek are credited with inventing the Leyden Jar in 1745. This electrical storage device was the first opportunity to use electricity to create a useful electric circuit. There is no acceptable and convincing record of what the first circuits were and who created them. But, credit for the first true electric circuit is due to these two men.
What is the efficiency of a transformer?
The "all day" efficiency of a transformer is defined as the ratio of energy out/energy in for a given all day cycle.
What are series circuits used for in aircraft What is the advantage or disadvantages?
Any circuit that includes a switch (or other control - or measuring indicator) is a series circuit.
How do you determine the tolerance of 4-band resistors?
Look at the 4th band:
- silver, 10%
- gold, 5%
- brown, 1%
- red, 2%
- orange, 3%
- yellow, 4%
A resistor with only 3 bands is 20%
A cold circuit
How do circuit breaker keep the wires in a electrical circuit from overheating?
A circuit breaker is designed to 'break' in a circuit if a short circuit (or other malfunction) occurs. This prevents overheating (or burn-out) of the circuit wires. In older systems, you would need to find which fuse wire has fused and replace it. In a circuit breaker, once the fault has been found and corrected, the breaker is simply switched back on.
Which modern devices use integrated circuit?
Practically all electrical devices include integrated circuits today. Anything from a domestic electric kettle to a space station will include them
What will happen to the current if the resistance is decreased?
If resistance is decreased, the current will increase according to Ohm's Law. This is because current is directly proportional to voltage and inversely proportional to resistance. Lower resistance allows more current to flow for a given voltage.
