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Question

A bird sitting on a high-power electric line is still safe. How, explain it briefly?


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Solution

Electric potential difference

  1. The work done in moving a unit positive charge from one place to another is called electric potential difference within an influence of the electric field.
  2. When there is a potential difference between the two sites, current flows in the circuit.
  3. There must be a potential difference across the bird's claws for the current to pass through it.

Determining the size of the possible difference between the bird's claws.

  1. Almost every living thing, we know, has a tiny conducting property. The birds are no different. The claws are conducting as well.
  2. When there is a potential difference between the two sites, we know that current flows across the circuit. Because there is a little voltage drop across the resistor, current flows across it and the potential difference is created.
  3. We also understand that current flows only in closed circuits. As a result, the current will flow from one of the claws, through the body, and join at the claw and wire connection.
  4. Now, there must be a potential difference across the bird's claws for the current to flow through it.
  5. We know that across the power lines, the electric lines provide a steady voltage supply.

As a result, the potential difference between the claws will be minimal or non-existent. Hence, no current will pass through the bird, and it will not be electrocuted.


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