Cavity inside a current carrying conductor

In summary, a current carrying conductor with a cavity inside will not electrify someone inside due to the low resistivity of the conductor. In situations where a person is in a car with a fallen electricity cable, it is safer to stay in the car until the electricity is turned off rather than trying to step out.
  • #1
bagdi
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suppose there is a cavity inside a current carrying conductor.if anyone is inside the cavity he will be electrified or not?what's the explanation of this problem?
 
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  • #2
Hi and welcome.
Conductors, especially those that are used to actually carry current, have very low resistivity so no two parts of this cavity will have more than a very few mV across them. So (assuming he can hold his breath or that there are some holes) the person would be fine because no appreciable current could be flowing through him.

If you find yourself in a car on which an electricity cable has fallen, you would be safe as long as the sparks don't cause a fire. Best advice would probably be to stay there until someone rings the electricity company and the power is turned off. Trying to step down to the ground could be risky, though.
 
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Likes Dale and anorlunda

What is a cavity inside a current carrying conductor?

A cavity inside a current carrying conductor refers to a void or empty space within the material of the conductor through which an electrical current is flowing. This cavity can be caused by various factors such as corrosion, damage, or manufacturing defects.

What are the effects of a cavity on a current carrying conductor?

A cavity can significantly affect the performance of a current carrying conductor. It can cause interruptions or disruptions in the flow of electricity, leading to voltage drops, overheating, and potential circuit failures. It can also weaken the structural integrity of the conductor, making it more prone to damage.

How can a cavity be detected in a current carrying conductor?

There are various methods for detecting a cavity in a current carrying conductor. These include visual inspections, ultrasonic testing, eddy current testing, and magnetic particle inspection. The appropriate method will depend on the type of conductor, its material, and the size and location of the cavity.

Can a cavity in a current carrying conductor be repaired?

In some cases, a cavity in a current carrying conductor can be repaired. This is typically done by filling the void with a conductive material or by reinforcing the area around the cavity. However, the effectiveness of the repair will depend on the severity and location of the cavity, as well as the type of conductor.

How can a cavity in a current carrying conductor be prevented?

The best way to prevent a cavity in a current carrying conductor is through regular maintenance and inspections. This can help identify any potential issues early on, allowing for repairs to be made before the cavity affects the performance of the conductor. Additionally, proper handling and installation of the conductor can also help prevent cavities from forming.

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