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How does voltage drop related to impressed emf?
Voltage drop is resultant of IR ie current and the line resistance, not dependent on impressed emf
15km pipeline is corrosion protected with Impressed Current cathodic protection at both end of pipeline 10metres of pipe is above ground. Will the CP system work on this above ground pipe?
Yes it will
If the voltage impressed across a circuit is constant but the resistance increases by a factor of 7 By what factor does the current change?
A: 1/7
Would a 5 ohms a current of 0.5 amperis when volts is impressed acrossed it?
V=I*R, 0.5A*5ohms = 2.5Volts
How much resistance allows an impressed voltage of 6 V to produce a current of 0.006 a?
R=V/i That is 1000 ohm.
What three elements prevent corrosion?
Use of corrosion-resistant materials, such as stainless steel or aluminum. Application of protective coatings, like paint or enamel. Implementing cathodic protection methods, such as using sacrificial anodes or impressed current systems.
When do the anodes and cathodes affect the voltage of a battery?
The anodes and cathodes affect the voltage of the battery all the time. Without them, the battery would not work. The anode provides the positive charge or current. The cathode provides the negative charge or electrons. Part of the anode is down in the battery and part serves as a terminal. Part of the cathode is down in the battery and part serves a a terminal.
What is the use of zinc anodes in pier jetty columns?
Zinc anodes offer a sacrificial method of maintaining the steelwork of the pier.. The anodes 'attract' corrosion thereby extending the life and protecting the steel work. (same as on ships hulls etc)
Are anodes positive or negative in an electrical circuit?
Anodes are positive in an electrical circuit.
Are anodes positive in an electrochemical cell?
Yes, anodes are positively charged in an electrochemical cell.
Does voltage flow across a circuit or is it impressed across a circuit?
Voltage is impressed across a circuit. Current flows through a circuit.
Can cathodes and anodes be displaced by magnets?
Yes, cathodes and anodes are typically made of metal which is not affected by magnetic fields. Therefore, magnets would not displace cathodes and anodes.
Are anodes typically negative or positive in an electrochemical cell?
Anodes are typically negative in an electrochemical cell.
What are the advantages of using lithium ion battery anodes in comparison to other types of battery anodes?
Lithium ion battery anodes offer higher energy density, longer lifespan, and faster charging capabilities compared to other types of battery anodes.
How can grounded corrosion be prevented in metal structures?
Grounded corrosion in metal structures can be prevented by applying protective coatings, such as paint or corrosion-resistant coatings, regularly inspecting and maintaining the structure to address any signs of corrosion, using sacrificial anodes or impressed current systems to protect the metal, and ensuring proper drainage and ventilation to prevent moisture buildup.
How does voltage drop related to impressed emf?
Voltage drop is resultant of IR ie current and the line resistance, not dependent on impressed emf
What is the purpose of marine anodes?
Marine anodes are used to prevent galvanic corrosion in boats and marine structures. They work by sacrificing themselves to protect more valuable metal components, such as the hull and propellers, from corrosion caused by electrochemical reactions in seawater. Typically made from zinc, aluminum, or magnesium, these anodes are installed in areas where corrosion is likely to occur, ensuring the longevity and integrity of marine equipment. Regular replacement of anodes is necessary to maintain effective protection.
