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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
Which one of the following does not affect the electrical resistance of a body?
The color of the body does not affect its electrical resistance. Electrical resistance is determined by factors such as the material, dimensions, and temperature of the body. The color of an object is related to its appearance and does not have a direct impact on its electrical properties.
Fluorescent lamp exprimental theory?
The experimental theory of fluorescent lamp had been around since the 1880's. It took several decades and various scientists, like Heinrich Geissler, Daniel Moore and Richard Thayer, before a commercial working model became viable.
It all depends on the type of appliance!
Some 240 Volt appliances, such as some electric motors, DO need to have a Neutral wire. Some of these appliances have timers or other devices inside them which only require a 120 Volt power supply, hence they need a Neutral wire to get that.
Other appliances, for example some household electric clothes dryers, DO NOT have to use a neutral wire because they only have a very simple heating element connected just to the red and black "hot" legs of the supply. (One hot leg is actually 120 Volts above Neutral when the other leg is 120 Volts below Neutral. But remember, as this is alternating current, they both alternate 60 times a second, going from zero to +120V to zero to -120V and back to zero again.)
However a dryer should always have a Ground wire connected to its metal casing to protect users from possible electrocution and prevent a house fire. Such a ground wire helps ensure that the circuit breaker or fuse will cut off the power supply if a fault occurs within the appliance or its power outlet. (But that has nothing to do with "needing" a connection to a Neutral wire.)
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
Why does static electricity not last?
because as soon as you touch the groud all the extra electrons causing the charge go into the ground. This menas that the chrge disapears, as does the effect. However, if you stay insulated from the ground the effects last much longer.
Which describes static electricity?
Static electricity is a buildup of electric charge on the surface of an object due to friction with another object. This charge remains in place until it is discharged, often causing objects to repel or attract each other. Examples include socks sticking to clothes in the dryer or hair standing on end after rubbing a balloon on it.
What happens when a 2A 220 volt appliance is plugged into a 110 volt?
Plugging a 2A 220V appliance into a 110V outlet may cause the appliance to not function properly or not turn on at all. The lower voltage can potentially damage the appliance's internal components, so it is not recommended to plug it in without a voltage converter.
It doesn't say you can, and it doesn't say you can't. The NEC sets forth minimum requirements for the installation of electrical wiring, equipment, and devices. It is not a safety procedures manual. Whether you can work on energized equipment would be covered by OSHA rules, company regulations, industrial site regulations, state licensing requirements, and the like. Not to mention common sense. In general, a workman should never work on a live system if it could be de-energized and worked cold. There are actually very few situations that truly require hot work. Anyone doing hot work should have the proper training and PPE (personal protective equipment) to do the work safely. If you have any hesitation about doing live work - DON'T. This subject is covered at length in NFPA 70e: Standard for Electrical Safety in the Workplace <><><>
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.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work
AND
always use an electricians test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure 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 is the object called that uses electricity in a circuit to make something happen?
The object that uses electricity in a circuit to make something happen is known as the load. Usually the load is rated in watts.
How does water make electricity?
Water, as it flows downhill can be made to spin turbines. These turbines can be used to move electromagnets through electrical coils. The motion of magnets, though coils generates electricity through a process called induction.
What is the filament inside a light bulb?
The filament inside a light bulb is typically made of tungsten. When electricity passes through the filament, it heats up and produces light through incandescence.
What is the hypothesis for static electricity?
My hypothesis for my experiment was that rubbing the balloon on the wool sweater will make the balloon stay on the desk the longest. I believe this because the sweater was furry. I also predicted that there would not be a different in the amount of time the balloon stayed on the desk at different times of day.
Why does static electricity happen?
Static electricity is an electric charge, it is created by friction, and causes sparks, and attracts dust or hair
example:
....walk across a carpet, electrons move from the rug to you. Now you have extra electrons. Touch a door knob and ZAP! The electrons move from you to the knob. You get a shock. because sometimes, as you rub two materials together the tiny, negatively charged electrons move from one material to another.
Do most flashlights have series circuits?
Many flashlights use series circuits because they allow multiple batteries to be connected in a way that adds their voltages together to power the light. This setup is simple and cost-effective for producing a reliable and bright light output.
How does a magnet and a conductor interact to create a flow of electricity?
This seems like a question from an electrical course, and is probably best answered by your course materials. It's your test question, not ours, and there won't always be someone to ask the answer of. Earn your diploma.
How do you wire a 220V 30A 3prong receptacle?
MAINS ELECTRICITY IS VERY DANGEROUSELECTRICITY CAN KILL YOU IF YOU DON'T REALLY KNOW WHAT YOU ARE DOING=IF YOU ARE NOT SURE YOU CAN DO THIS JOB SAFELY YOU MUST CALL IN A LICENSED ELECTRICIAN TO DO IT FOR YOU.=
Who was the greek philosopher that discovered static electricity?
Thales of Miletus, a pre-Socratic Greek philosopher, is often credited with discovering static electricity around 600 BCE. He observed that amber, when rubbed with fur, attracted lightweight objects—a phenomenon now known as static electricity.
What type of electricity is produced by rubbing two balloons together?
Static electricity is produced when two balloons are rubbed together. This occurs due to the transfer of electrons from one balloon to the other, creating a build-up of static charge on the surface of the balloons.
What type of resistance do conductors have?
Conductors have resistance due to collisions between free electrons and atoms within the material. This resistance causes energy to be lost in the form of heat when current flows through the conductor. The resistance value depends on the material and dimensions of the conductor.
What is a tank circuit used for?
A tank circuit is used on a radio transmitter. It is an electronic circuit that is used to tune a specific frequency. The tank is made up of two components, an inductor and a capacitor. The two components are connected in a parallel with each other. This is where the term "tank" comes from. Used in a radio transmitter, it is tuned for maximum RF (radio frequency) output on the frequency the transmitter is tuned to.
Is a remote control a series or parallel circuit?
A remote control typically contains both series and parallel circuits. The internal components, such as the battery holder and certain buttons, may be connected in series to create a complete circuit, while other components like the infrared transmitter may be connected in parallel to the main circuit.
Does a pencil conduct electricity?
Yes, a pencil can conduct electricity to some extent due to the presence of graphite in its core. However, it is not a good conductor compared to metals like copper or aluminum. The graphite allows the flow of electrons, but the resistance is higher compared to metals.
Does the kinetic energy of a system change during a phase change?
This seems like a question from an electrical course, and is probably best answered by your course materials.
It's your test question, not ours, and there won't always be someone to ask the answer of. Earn your diploma.
Haha, whoever wrote that is Just mean.
He or she wrote it here because they didnt understand it and wanted to knowledge of our community we call earth (sharing is caring).
Anyhoo during a phase change (lets use the example of ice to water) ice to water is the phase change. When heat is added the particles move, but the energy isn't used for it for movement, instead its for breaking the bonds. And kinetic energy is energy from movement. Thus, nope its potential energy that is being changed.
Gl to all those kids/teens/adults that search this question! I was too pissed when i didnt come up with an answer for this question, and its mean ppl like the one above me who make it worst for us cram-last-minute people =)
How do you wire a 68 firebird to a motor from a 78 firebird?
The biggest concern here is the alternator/voltage regulator design. The 68 is external while the 78 has it built into the alternator. There are websites that explain how to do this. The only other real issue is the coil. The HEI needs more voltage than the small wire running to the external type coil of a 68.
Will 40 amperes convert to volts?
Since the ampere is the SI unit for current, and the volt is the SI unit for potential difference, we are looking at two completely different quantities. So you cannot convert one to the other.
Is lead a good conductor of electricity?
Lead is a good conductor.
Conductor
Lead is a metal and it will conduct electricity.
A pencil lead is made of graphite, a type of soft carbon. This is a non-metal, but it does conduct electricity.
Conduct
