Dangers of high current/voltage?

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In summary, high voltage and high electrical current can be dangerous in a circuit if they exceed the circuit's capacity or if someone does not know what they are doing. However, as long as the circuit is properly managed, high voltage and current can be safely handled. It is the power, measured in watts, that poses the greatest risk to living beings.
  • #1
user111_23
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Why is high voltage dangerous in a circuit? Similarly, why is high electrical current dangerous in a circuit?
 
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  • #2
user111_23 said:
Why is high voltage dangerous in a circuit?
It's only dangerous if it exceeds the circuit capacity, or someone does not know what they are doing.
Like the squirrel: http://www.youtube.com/watch?v=0XBurkUkdFE&NR=1
Someone who knows what they doing can hang onto 500,000 volts:

Similarly, why is high electrical current dangerous in a circuit?
Same answer: It's only dangerous if it exceeds the circuit capacity, or someone does not know what they are doing.

The following two gentlemen appear to have opened a circuit breaker which had a large current flowing through it: http://www.youtube.com/watch?v=h10ALIpD0R4&feature=related

As long as the circuit was closed, thousands of amps could flow safely. As soon as the switch was opened, a plasma fireball was ejected, which probably injured the two men.
 
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  • #3
In terms of danger to living beings, high voltage isn't intrinsically dangerous. A Van de Graaff generator can easily create potential difference of thousands of volts and more, and yet is safe (although I wouldn't want to touch a charged one!). It's the power (P=I^2*R=V^2/R) that fries you if you happen to touch a bare wire.
-----
Assaf
http://www.physicallyincorrect.com" [Broken]
 
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  • #4
Burns from electrical contact can be treated. Enough current (more than a few milliamps) flowing across your upper torso (like from hand to hand, or hand to foot) can stop your heart.
 

What are the potential dangers of high current/voltage?

High current and voltage can be extremely dangerous for both humans and electronic devices.

What are the health risks associated with exposure to high current/voltage?

Exposure to high current and voltage can cause electric shock, burns, and even death in severe cases. It can also lead to neurological and cardiac issues.

How can high current/voltage affect electronic devices?

High current and voltage can cause damage to electronic devices by overheating and short-circuiting their components. This can lead to malfunctions and even permanent damage.

What safety precautions should be taken when working with high current/voltage?

When working with high current and voltage, it is important to wear appropriate protective gear such as insulated gloves and goggles. Ensure that all equipment is properly insulated and grounded, and follow proper safety protocols.

What steps can be taken to prevent accidents caused by high current/voltage?

To prevent accidents caused by high current and voltage, it is essential to receive proper training and education on handling such equipment. All equipment should be regularly inspected and maintained, and any faulty parts should be replaced immediately.

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