Electrostatics-Final Review

Electrons and protons have the same charge and therefore attract each other.

• true
• false

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Electric charge is neither created nor destroyed, but can be rearranged.

• true
• false

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A material is a good insulator if outer electrons of atoms in the material are free to roam around.

• true
• false

When an object is charged by induction, electrons flow from the ground onto the object, or from the object onto the ground.

• true
• false

Atomic nuclei of almost all atoms consist of

• only protons
• protons and neutrons
• protons and electrons
• neutrons and electrons

Tags

NGSS.HS-PS1-8

A positive ions has

• one proton
• more electrons than protons
• more protons than electrons
• a +1 charge always

Tags

NGSS.HS-PS1-7

Coulomb's law says that the force between any two charges depends

• directly on the magnitude of the charges
• inversely on the square of the distance between the charges
• both of the above
• neither of the above

Tags

NGSS.HS-PS2-4

A 2-C charge and a 4-C charge attract each other with 10 N of force.  How much will a 2-C charge and an 8-C charge attract each other when placed the same distance apart?

• 40 N
• 20 N
• 10 N
• 8 N

Tags

NGSS.HS-PS2-4

In a good insulator, electrons are usually

• free to move around
• free to move around after an impurity has been added
• semi-free to move around
• tightly bound in place

Tags

NGSS.HS-PS2-6

The reason a charged balloon will stick to a wall is that

• the charge is slightly sticky and acts like glue
• electrons transfer back and forth between the wall and the balloon
• induced opposite charges in the wall are closer than other wall charges
• balloon material simply sticks to walls