Lightning & Voltage Spikes: Exploring the Effects

In summary, lightning is caused by the buildup and discharge of static electricity in the atmosphere, while voltage spikes can be caused by a variety of factors such as power surges, lightning strikes, and faulty electrical equipment. These can cause serious damage to electronic devices by sending a surge of high voltage through the circuits, resulting in immediate failure or gradual degradation over time. While it is not possible to completely prevent lightning and voltage spikes, measures such as using surge protectors, grounding systems, and lightning rods can help minimize their effects. Some electronic devices are more vulnerable than others, but all can be protected with the right equipment. To test the effectiveness of protection measures, you can use a surge protector tester or consult a professional electrician.
  • #1
RedX
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How does lightning cause a voltage spike? Is it the changing magnetic field caused by the lightning current that induces an emf in the power lines, or are electric charges deposited on the actual lines (like a battery pushing charges). Is it possible for the emf of the lightning to cancel the emf of the generator, so that you get a voltage reduction instead of a spike?
 
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  • #2
The em produced by lightning is a burst of high frequency AC, so the induced voltage in a cable would be oscillating in 'both directions'. It is 'AC coupled'.
 

1. What causes lightning and voltage spikes?

Lightning is caused by the buildup and discharge of static electricity in the atmosphere. Voltage spikes, on the other hand, can be caused by a variety of factors such as power surges, lightning strikes, and faulty electrical equipment.

2. How does lightning and voltage spikes affect electronic devices?

Lightning and voltage spikes can cause serious damage to electronic devices by sending a surge of high voltage through the circuits. This can result in immediate failure or gradually degrade the components over time.

3. Can lightning and voltage spikes be prevented?

While it is not possible to completely prevent lightning and voltage spikes, there are measures that can be taken to minimize their effects. This includes using surge protectors, grounding systems, and lightning rods.

4. Are all electronic devices equally vulnerable to lightning and voltage spikes?

No, some electronic devices are more vulnerable than others. Devices with sensitive components, such as computers and televisions, are more likely to be affected by lightning and voltage spikes. However, all electronic devices can be protected with the right equipment.

5. How can I test if my electronic devices are protected against lightning and voltage spikes?

You can test the effectiveness of your surge protectors by using a surge protector tester, which can be purchased at most hardware stores. You can also consult a professional electrician to assess the safety of your grounding system and lightning protection measures.

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