Which of the following is generated by atmospheric disturbance?

Concept:

• Atmospheric disturbances, such as lightning strikes, can generate high-voltage surges that can travel through power lines and other electrical conductors. These surges can damage electrical equipment and cause power outages.
• Internal overvoltage and internal charging are generated by the electrical system itself. They are not caused by atmospheric disturbances.
• External interference is caused by man-made sources, such as radio and TV transmitters. It is not caused by atmospheric disturbances.
• So the correct answer is the one that is caused by atmospheric disturbances. This is external overvoltage.

Additional Information 

Here are some other examples of atmospheric disturbances that can generate external overvoltage:

• Thunderstorms
• Volcanic eruptions
• Solar flares
• Geomagnetic storms

These disturbances can create strong electric fields in the atmosphere, which can induce voltage surges in electrical conductors. These surges can be very damaging to electrical equipment. To protect electrical equipment from atmospheric overvoltage, surge arresters are used. Surge arresters are devices that divert the surge current to the ground, preventing it from damaging the equipment.