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What else can I help you with?
What is needed for an electric circuit light up a light bulb?
i have plans to make a lightbulb glow. to complete the circuit, what can i use? these are my options ....a copper penny,a plastic comb,a metal clip,or an iron nail?
Why would it be dangerous to replace a blown fuse with a copper penny?
The purpose of a fuse is to break a circuit in the event of some form of power surge within the circuit. This surge could be a momentary occurrence, such as those experienced immediate before and after power cuts, or it could be a result of a fault within the circuit, such as a broken transformer. Replacing a fuse with anything other than an appropriate fuse, would put anybody using the circuit at risk of electrocution, which could prove fatal depending upon the nature of the circuit and its use. <<>> Replacing a fuse with a penny is old technology that was used in the 40's and 50's. Distribution fuse boards are not sold anymore. An update to the old fuse boards was brought about in the 60's, where an insert was placed in the fuse socket that had different internal threads for different rated fuses. This move made it impossible to use the old penny trick. A lot of the old fuse panels did not have a main disconnect so if a penny was used instead of a fuse in the circuit on a fault a very high current could occur. The only fuse in the circuit would be the primary side of the feed transformer. These fuses are sometimes rated 300% higher than what the transformers need. This is to stop needless tripping if a branch accidentally falls across the primary line. A small branch would burn off without interruption to the power service. Over fusing would allow the current draw on the secondary to rise to 10,000 amps before the circuit would disconnect itself. In most cases the service feed wires would just melt and the circuit would open. So in effect one penny could cost the home owner thousands of dollars in repair work. New installations installed now are all circuit breaker distribution panels with main disconnects. That being said, even with new technology like using re-closers on the primary lines, one thing that has not changed is that the utility companies today still over fuse their transformers.
How do you use a multimeter to measure the current in a lemon?
You will need to add an anode and cathode, such as a penny and a nickel. Then add a load resister and use an amp meter to measure current flow, which will change depending on resistance. Measuring the potential current would prove more difficult.
How has transistors change the world?
Enormously! The predecessor to the transistor was the valve (tube in America). The valve was fragile, ran very hot, physically large and expensive to make. The transistor (although initially expensive) is robust, efficient, tiny and practically free nowadays (a modern Intel processor contains over 500 million transistor and costs around £100 so a transistor costs 20 millionths of a penny). So the change to the world has been the possibility of cheap "intelligent" electronics being added to many aspects of life.
What will happen if copper dipped in a vinegar?
Copper reacts with the oxidilized copper on the penny.
Why doesn't a penny melt in water?
A penny is a solid material that is made out of copper and the copper is melted and poured into a mold and cooled.
What is the width of a penny?
The diameter of a penny is 0.750-inches. A United States penny is made of copper-plated zinc. Coins that are worn, but still recognizable and coins that are chipped or mutilated are melted and reused.
What will happen to a tropical fish if a copper penny were dropped into the tank?
nothing!
Can copper pennies be melted down?
It is illegal to melt down pennies or nickels at this time. Currently the penny is only made of 2.5% copper with the rest zinc. However, prior to 1982 pennies were predominately made of copper. A pre-1982 penny is currently worth about 2 cents.
What coin is made out of copper?
The penny is made out of copper.
What element is found in the us penny?
Copper
How does the mass of zinc penny compare to a copper penny?
Copper pennies (95% copper, 5% zinc) weigh 3.11 grams. Modern zinc pennies (97.5% zinc, 2.5% copper) weigh 2.5 grams.
Any penny melted-down and sold as scrap metal?
It is illegal to melt U.S. pennies for copper. You can go to the United States Government mint site www.usmint.gov for more information. Every penny made before 1982 is 95% copper, and thus is worth 2.5 times its face value.
What is a 1956 copper penny worth?
A penny.
What has more copper penny or nickel?
PENNY
What is the percentage of copper in a 1993 penny?
A 1993 penny is composed of 97.5% zinc and 2.5% copper. Therefore, the percentage of copper in a 1993 penny is 2.5%.
