What does grounding accomplish in static potential control?

What does grounding accomplish in static potential control?

• A. Connecting units to a ground rod so that static potential is discharged into the earth
• B. Connecting units to a live electrical circuit
• C. Coating surfaces with insulating paint
• D. Reducing the weight of storage tanks

Answer: (A)

Grounding accomplishes this by giving static charges a low-resistance path to the earth. When charges build up on equipment, they flow through a grounding conductor to a ground rod and into the earth, discharging and equalizing the potential. This minimizes dangerous voltage differences and the chance of sparks, which is especially important around flammable vapors or powders. The other choices don’t achieve this: linking to a live circuit would introduce hazardous current, insulating coatings trap charges instead of draining them, and simply reducing weight has no effect on electrical potential.

Grounding accomplishes this by giving static charges a low-resistance path to the earth. When charges build up on equipment, they flow through a grounding conductor to a ground rod and into the earth, discharging and equalizing the potential. This minimizes dangerous voltage differences and the chance of sparks, which is especially important around flammable vapors or powders. The other choices don’t achieve this: linking to a live circuit would introduce hazardous current, insulating coatings trap charges instead of draining them, and simply reducing weight has no effect on electrical potential.