Why birds do not get current when sit on a live wire ?

Answer 1

Becuse they does not get earthed. Once they are not earthed, electricity can't pass through their body to the ground, hence they do not get a shock.Small birds are not so large to make a contact with both the positive & neutral lines.So there is no question of being earthed.( However, big enogh birds may get it done & they get the shock.

Average electricity (220 V) is not so powerful to create a discharge through air. However this is not in the case of high-tension lines (1000 V or higher). You'll find a bird electrified if they sit on these lines. Thousands of crows die due to this reason.

You may also have support for my opinion,if you've repaired electrical problems. It is always adviced to put on a pair of dry sandals while working on. Here the dry sandal works as the insulator & prevents passage of current through your body to the earth. However in case of high tension lines more strong insulators are to be used.

A pair of wet sandals will not do since moist rubber is a well enough conductor of electricity so you will get a shock.

A bird sitting on a power line, will get a shock if the current through the wire be fairly strong as well as the day be very humid. In that case the moisture present in air makes the air a good conductor of electricity,Which allows electric discharge through air resulting in the bird to get a shock.

Answer 2

Because they are only on one wire. Electricity is 'lazy', it won't go out of it's way at all, so there is nothing that would make current flow up through the bird and back down rather than just go straight along the wire.

Now...if it's a large bird, raptors get this alot...and it happens to make contact with more than one wire...the current might flow across the animal to find a quicker path to ground...

On the pole mounted transformers, the two insulated spikes sticking up are incredibly dangrous because of this. If an animal touches one, no problem, but if it hits two, then there is often a replacement of the transformer...squirrels are notorious for this...

Answer 3

It is because the bird dont get contact with earth. As the property of the electricity , It is required to pass through the body to the ground. Hence birds do not get a shock. In that case the moisture present in air makes the air a good conductor of electricity,Which allows electric discharge through air resulting in the bird to get a shock.

Answer 4

u get shock only when current flows through ur body to ground, and this can happen only when u r standing on ground , in case of birds they don have any connection with ground as they r up sitting on wire,so this settels...

Answer 5

its the current law : "AMPERE FOLLOWS THE PATH OF LEAST RESISTANCE". getting shock means current flows thro ur body.. wen birdie sits on tha wire its like a dead-end diversion .. current wont flow thro it as their is no further ahead where it can go..(refer: Corollary 1 of Kirchof Current Law).. this is bcos air acts like insulator blocking the path of da current. But if the wire is at very high potential then "DI-ELECTRIC BREAKDOWN" may occur(just like da ones in capacitors) with gaseous(aerial)discharge (i.e. current flowing thro air) causing the birdie to get a whacko hairstyle n rest in peace.

Answer 6

As they are not in contact with the earth. And a normal wire (220V) is not enough to discharge through air

Answer 7

Simply because they are not grounded. The current would only pass through them if it had somewhere to go, it needs a ground.

Answer 8

coz the claws of bird is prepared or contains fibire material

Answer 9

Not earthed. You can also hang from a live power cable, if you don't touch anything else.

Answer 10

because the wire has been covered by insulator .... rubber.