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A minimum of about 3 milliamperes is needed to make a spark visible to the human eye in normal lighting conditions. However, this can vary depending on factors such as the distance from the spark and ambient light levels.

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1y ago

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How much voltage is there in a visible spark?

30,000V for each centimeter in length. So for a spark of 2 centimeters that implies the voltage is 60,000V


Why does a battery spark when connecting the positive terminal?

When connecting the positive terminal of a battery, a spark may occur due to the sudden flow of electricity between the battery and the connected device. This spark is caused by the initial surge of current as the circuit is completed, creating a brief moment of high electrical resistance that produces a visible spark.


What is the difference between a sprk and lightning?

A spark is a visible electrical discharge caused by a sudden release of energy. Lightning is a large-scale spark that occurs in the atmosphere during storms, typically between clouds or between a cloud and the ground. Essentially, a spark is a smaller version of the phenomenon of lightning.


What happens when static electricity is released?

When static electricity is released, the excess charge is dissipated, often in the form of a spark or a sudden flow of current, which equalizes the charges between two objects. This discharge of static electricity can create a mild shock or a visible spark, depending on the amount of charge accumulated.


Does static electricity have different colors?

Static electricity itself does not have color. However, when static electricity causes a spark or discharge, the visible light emitted may appear as a color due to the gases present in the air. The color of the spark usually depends on the specific gases surrounding the discharge.