L3 Static Electricity Applications

What is the main benefit of using electrostatic paint sprayers?

• Create a rainbow effect

• Cause uneven coating

• Reduce amount of wasted paint

• Increase drying time

Where are electrostatic precipitators most commonly used?

• Schools

• Hospitals

• Power plants

• Restaurants

How do electrostatic speakers produce sound waves?

• By using magnetic fields

• By heating the diaphragm

• By inducing opposite charges in outer plates

• By using water vibrations

What is the purpose of an electrostatic lifting apparatus at a crime scene?

• To collect DNA samples

• To analyze blood spatter

• To make a copy of footprints

• To take fingerprints

What type of material works well as an electrostatic duster?

• Metal

• Cotton fabric

• Ostrich feathers

• Plastic

The paint molecules that are released from the electrostatic paint sprayer _____ one another and _____ the object.

• attract, are repelled by

• repel, are attracted to

• attract, are attracted to

• repel, are repelled by

_____ soot particles collect on collector plates that are positively charged.

• Positively charged

• Negatively charged

Electrostatic precipitators are used in...

• Air purifiers

• Factories

• Incinerators

• All of the above

The conductive layer of the laser printer drum that is made of selenium conducts electrons in response to _______ .

• Pressure

• Heat

• Temperature

• Light

What causes soot particles to become negatively charged? (Electrostatic Precipitators)

• Contact with negative grid

• Contact with positive grid

• Induction

• Friction