The two parts of a packet are the certificate and the while storms could be a cause, power are more likely to be caused by disturbances from high-demand equipment in a home or building.

Fluctuations.

Explanation:

When there is a storm it is certain that there will be power fluctuations in the area affected by the storm.

These power fluctuations also caused by the high demand equipment in a building or a home.For example in your home when switch on the Air conditioner when the compressor of the AC starts you should have observed a slight fluctuation in the power because AC is a high demand equipment.

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