Static Electricity

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will pop.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of these is NOT a way to create a static charge on an object?

• Friction

• Induction

• Electroaction

• Contact

What method of static charging is shown in this picture

• Polarization
• Friction
• Induction
• Conduction

Tags

NGSS.MS-PS2-3

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that

• friction destroyed electrons in the rod.
• the silk has become negatively charged.
• protons have moved to the rod.
• glass attracts more protons.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

A region around a charged particle that can exert a force on another charged particle is called an

• electric pulse.
• electric charge.
• electric force.
• electric field.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Charging by ____ occurs when electrons are transferred from one object to another by direct contact, without rubbing.

• reduction

• induction

• contact

• friction

The "Q" in Coulomb's Law stands for

• the mass of charges objects.
• the distance of charged objects.
• the force of charged objects.
• the charge of charged objects.

Tags

NGSS.HS-PS2-4

Force between two bodies having charges 5.0 x 10² μC and 1.0 x 10² μC separated by distance of 0.50 m in air is

• 1800 N
• 1.0 x 10³ N
• 2200 N
• 3.0 x 10² N

Tags

NGSS.HS-PS2-4

A positive charge of 4.0 µC exerts an attractive force of 8.0 N on an unknown charge 20.0 cm away. The unknown charge is

• + 8.9 µC 
• - 8.9 µC
• + 4  µC
• - 44  µC 

Tags

NGSS.HS-PS2-4

The ball on the string is being repelled (pushed away) by the metal bar.

What could potentially be the charge on the ball?

• It MUST be positive

• It MUST be negative

• It MUST be neutral

• It could be positive or neutral

• It could be negative or neutral