Which method is recommended to eliminate static electricity from the body?

Touching a grounded metal case to drain off charges is the most effective method to eliminate static electricity from the body. When a person accumulates static electricity, they are essentially accumulating an imbalance of electric charge. By touching a grounded metal surface, the excess charge is allowed to flow from the body into the ground. This process neutralizes the static electricity, reducing the risk of discharge that could potentially damage sensitive electronic components or create safety hazards.

Grounding is a widely used practice in various electronic and industrial environments, ensuring that static charges do not build up. Understanding this process is critical for technicians working with electronic equipment because static discharge can lead to costly damage or failures in sensitive devices.

The other methods mentioned do not effectively neutralize static charge on the body. For instance, touching an insulated surface does not provide a path for the charge to dissipate, thus failing to eliminate static electricity. Keeping moving may help with blood circulation, but it does not influence the electric charges present on the body. Lastly, using insulated gloves can prevent static discharge but does not eliminate the charge itself before working on electronics. Thus, the recommended method of touching a grounded metal case stands out as the best practice for safely eliminating static electricity.