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For simple resistance measurements it usually doesn't matter.
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Why is the voltage at the end of a long extension lead used with an electric drill less than the mains supply voltage?
Resistance in the length of wire that makes up the extension cord causes voltage to drop. But it needn't be a problem with the right extension cord. For an electric drill, up to a 25 foot cord of 16 gauge wire will cause a voltage drop so small as to be negligible. For 50 feet, switch to a 14 gauge cord. For heavier power tools (circular saw in particular) you should use a 14 gauge extension from the get-go.
What is the effect on total resistance of adding this third bulb?
If a fourth bulb were added in a similar way to the three existing bulbs, the resistance in the circuit would go up if the bulbs were series connected, and it would go down if the bulbs were parallel connected.
What is the relationship between lamp brightness and resistance in a series circuit?
The higher the resistance the dimmer the light will become. The voltage drop (current) is proportional to the resistance as seen in the equation V=IR, since voltage remains the same throughout a series circuit if the equivalent resistance goes up the amount of current reaching the lightbulb must go down to equal the voltage thus creating a dimmer lightbulb.
What happens to an electric current when the wire is made smaller?
Electric current as we usually describe it is the flow of electrons. Current is caused to flow by voltage, which can be looked at as "electrical pressure" that forces electrons to move. Currents can be made smaller or larger by decreasing the voltage across a fixed amount of resistance. As resistance is the quality of "resisting" or "limiting" current flow, we can change resistance to change current. For a give voltage, if we increase the resistance, we can make the current smaller, and if we decrease it, we can make current larger. In electronics, voltage equals current times resistance. E = I x R Also true is that current is equal to voltage divided by resistance. I = E/R As current equals volts divided by resistance, if we change one of them without changing the other, current will change. And in increase in voltage (with no change to resistance) will cause current to go up. The opposite is also true. Also, if we increase resistance (with no change in voltage), current will go down. And the opposite is true here, too.
What happens to the current in a circuit if the resistance is increased?
current is the movement of charg carriers (normaly electrons) through a conductive material. the easyest way to think about it is that voltage is like a force pushing on the electrons, and resistance will push back against this. Current is then the result of these two factors. This is where we get the equation voltage=current*resistance. In answer to your question, increasing the circuit resistance will decrease the current in the circuit, as long as the supply voltage stays the same.
Where does the drill team and color guard go on the army ROTC uniform?
The drill team red cord goes on the left shoulder, and the color guard white cord goes on the right shoulder.
What nicknames does Cord McConnell go by?
Cord McConnell goes by Rush.
Can stuff go down your spinal cord?
No.
Can you use an extension cord for a window air conditioner?
Yes, but be sure it is of sufficient rating to handle the current. Air conditioners typically use a large amount of electrical current, and so the ampere rating of the cord needs to be high enough not to cause appreciable heating or failure of the cord. Also, the longer the extension cord, the heavier its gauge needs to be, as its resistance goes up in direct relationship to its length. If the resistance of the extension cord gets too high, the compressor motor will see insufficient voltage to start up reliably and will run poorly or not at all. Look for an "appliance extension cord" when you go to the store. They are easily distinguishable from ordinary lamp extension cords by their heavier weight cable and they're almost always equipped with a 3-prong plug and receptacle. Keep the extension cord run from the outlet to the air conditioner as short as practical -- less than 12 ft (4 meters), if you can.
Can you use an extension cord with a window air conditioner unit?
Yes, but be sure it is of sufficient rating to handle the current. Air conditioners typically use a large amount of electrical current, and so the ampere rating of the cord needs to be high enough not to cause appreciable heating or failure of the cord. Also, the longer the extension cord, the heavier its gauge needs to be, as its resistance goes up in direct relationship to its length. If the resistance of the extension cord gets too high, the compressor motor will see insufficient voltage to start up reliably and will run poorly or not at all. Look for an "appliance extension cord" when you go to the store. They are easily distinguishable from ordinary lamp extension cords by their heavier weight cable and they're almost always equipped with a 3-prong plug and receptacle. Keep the extension cord run from the outlet to the air conditioner as short as practical -- less than 12 ft (4 meters), if you can.
Who is in charge of cord blood america?
Matthew Schissler is the CEO of Cord Blood America. You can go to the Cord Blood America website and get more information about Mattew Schissler and about Cord Blood America.
Does anything go down your spinal cord when you eat?
Yes and no. Food goes down your esophagus when you eat. But, nerves go down your spinal cord constantly.
What system does spinal cord go into?
The nervous system.
Does local American Red Cross provide for or have services in relation to collecting and saving cord blood. My daughter is having a baby in April and I am researching. Both my parents have had Heart issues and my brother had some skin cancer issues.?
I don't believe that the Red Cross is involved in cord blood banking. However, there are other companies out there that do. I can think of two private companies that do: Via Cord (www.viacord.com) and Cord Blood Registry (www.cordblood.com) to give you an overview, what happens is that the cord blood is collected right after the baby is born. If you want to have access to that particular blood at a later date, you would want to go with a private company. However, there is a collection fee and usually an annual fee.
What can happen to a person with spinal cord injury?
a person with a spinal cord injury could become paralyzed or go into a coma
Why is the voltage at the end of a long extension lead used with an electric drill less than the mains supply voltage?
Resistance in the length of wire that makes up the extension cord causes voltage to drop. But it needn't be a problem with the right extension cord. For an electric drill, up to a 25 foot cord of 16 gauge wire will cause a voltage drop so small as to be negligible. For 50 feet, switch to a 14 gauge cord. For heavier power tools (circular saw in particular) you should use a 14 gauge extension from the get-go.
Where does the large vein at the base of the umbilical cord go in a pig?
In a pig, the large vein at the base of the umbilical cord carries oxygenated blood from the placenta to the fetus. This vein connects to the liver before entering the heart.
