Question

As soon as the current is switched on in a high voltage wire the bird sitting on it flies away

Answer 1

As soon as the current is switched on in a high voltage wire the bird sitting on it flies away.

The reason being due to induced current flowing throughout the body of the bird,which flows in the opposite direction through the wings of the birds.

Hence, the wings experience a force of mutual repulsion.

As a result the wings spread and the bird flies away.