TELEVISION

[prateeksikka]

AUDIOGURU!
HIGH VOLTAGE GENERATING HIGH CURRENT KILLS A PERSON.
A 2A CURRENT SOURCE ,WILL IT GIVE ME A SHOCK,IF NOT WHAT VALUE OF CURRENT SOURCE
(ASSUMED IDEAL) AND WHAT VALUE OF VOLTAGE SOURCE CAN GIVE A GOOD SHOCK?
PRATEEK

 

[ante1]

An earth fault circuit breaker will protect you as soon as the 400VAC or 240VAC rises above 30mA. So I guess you could stand for 29mA indefinitely!?

 

[prateeksikka]

ANTE!
IF I CAN STAND HEALTHY T 29 mA,I GUESS EASILY I CAN TOUCH THE VERY HIGH VOLTAGE TRANSMISSION LINE WHICH HAS A FEW MICRO AMPERES FLOWING,CAN A MICROAMPERE CURRENT KILL A PERSON EVER?
PRATEEK

 

[audioguru2]

When the high voltage spark burns through your skin and travels much easier inside you, it will probably take only a few uA to kill you.

29mA seems like a lot of current through a person, my country's limit is much lower. Since your skin has a high resistance, the current probably spreads out over it.
I think the current limit is for AC mains voltage that shakes you and throws you away if shocked. High voltage DC would make your muscles contract and you can't let go, getting a much longer shock with more burning causing higher current.

He, he. Maybe your body has a circuit breaker. The current stops when your blood boils away!

 

[prateeksikka]

hi audioguru!
can i safely conclude that it is neither voltage,nor current but high power kills a person.high voltage and high current alone cant do anything .it is the power(voltage*current) which kills the person.
comments from all?
prateek

 

[audioguru2]

It is not as simple as saying it is power that kills:
1) AC or DC makes a big difference.
2) The skin's resistance (wet or dry) or whether the spark has burned into you makes a huge difference.
3) Where on your body the current flows makes a huge difference. You can pass a high current through a single arm or leg all day long. You won't die until it falls off! But pass a tiny DC current through your heart between both arms or an arm on one side and a leg on the other and your heart stops. Then you'll be very dead very soon.

You also can't accurately determine how much voltage is lethal since the body's resistance is so variable. How many people did they kill to find out how much current is lethal? Try it! Maybe they used a de-fib thingy to get the hearts going again. ;D ;D

 

[prateeksikka]

hi audioguru!
in any case which when according to you is more dangerous?
a 220 V AC OR A DC VOLTAGE OF SAME VALUE?
MY ANSWER(A GUESS) IS DC BECAUSE AC WILL ATLEAST ASSUME ZERO VALUE MANY TIMES IN SAY 10 SECONDS BUT DC WOOOOOOOOF!
WHAT DO U THINK?
PRATEEK

 

[audioguru2]

Even though AC has a much higher peak voltage, DC causes your muscles to contract so you can't let go. AC vibrates your muscles and probablly causes you to be thrown away.

 

[prateeksikka]

HI AUDIOGURU!

AC THROWS US AWAY BECAUSE I GUESS DIFFERENT FORCES DIRECTION B/W PARALLEL AND ANTI PARALLEL CURRENTS.]
(I GUESS)
MOREOVER AT OUR HOME AC VOLTAGE BECOMES ZERO ATLEAST 50 TIMES IN 1 SECOND.WHILE DC MAKES ME STICK TO THE LINE,NO CHANCE OF GETTING AWAY HENMCE IT IS MORE DANGEROUS!
RIGHT?YOUR COMMENTS
PRATEEK