Electrostatics Review 2022

An atom has 300 electrons and 365 protons. What is the charge of the atom? (Charge of one proton is 1.602 x 10^-19)

• -1.04 x 10^-17 C

• 1.04 x 10^-17 C

• 1.93 x 10^-17 C

• -1.93 x 10^-17 C

An atom has 200 electrons and 163 protons. What is the charge of the atom? (Charge of one proton is 1.602 x 10^-19)

• -5.93 x 10^-18 C

• 5.93 x 10^-18 C

• -4.32 x 10^-18 C

• 4.32 x 10^-18 C

If an atom is neutral, which of the following could make it have a positive charge? (Select all that apply)

• Gaining protons

• Losing protons

• Gaining electrons

• Losing electrons

Which of the following are in the nucleus of an atom? Select all that apply.

• Protons

• Neutrons

• Electrons

• Spectrons

Which of the following circle around the outside of an atom? Select all that apply.

• Protons

• Neutrons

• Electrons

• Spectrons

Electrons can move freely in ______________.

• Insulators

• Conductors

• Rubber

• Plastic

In the Sticky Tape Lab, the pipe was rubbed with rabbit fur and the pipe became negatively charged. Why did this happen?

• Electrons left the pipe and attached to the fur

• Electrons left the fur and attached to the pipe

• Protons left the pipe and attached to the fur

• Protons left the fur and attached to the pipe

A conductor has the same number of protons and electrons. The object must be

• Positively charged

• Negatively charged

• Neutral

A conductor has more protons than electrons. The object must be

• Positively charged

• Negatively charged

• Neutral

In the diagram, a negatively charged metal sphere touches a neutral metal pole. What is happening?

• Polarization

• Charging by Conduction

• Charging by Induction

• Charging by Lightning