TCFP Plans Examiner Practice Test

Which of the following is NOT a source of static charge generation?

1. Belts in motion

2. Magnetic fields

3. Moving vehicles

4. Explosion potential

The correct answer is: Magnetic fields

A magnetic field itself does not generate static electricity; it is primarily associated with dynamic electrical activities, such as the flow of current or changing magnetic fields. Static charge generation typically arises from processes involving friction, contact, or separation between materials, which is relevant to the other options listed. Belts in motion, such as those in conveyor systems, can create static electricity through friction between the belt and pulleys or other surfaces. Moving vehicles can also generate static charges, especially when they are in contact with or passing through materials that can become charged, such as dust or moisture. Additionally, explosion potential is often linked to the presence of static electricity, particularly in environments where flammable materials are present and can be ignited by sparks due to static discharge. Since a magnetic field does not inherently involve the processes that lead to static charge accumulation, it stands apart from the other choices as not being a source of static charge generation.