Quiz Ch.1 Electrostatics

Charged objects are not attracted to neutral objects.

• TRUE

• FALSE

Assume a rubber rod rubbed against a rabbit fur and Gains 5 electrons. Which of the following is true ?

• The Fur lost 2 Electrons

• The fur lost 5 Electrons

• The fur gained 5 Protons

• The fur gained 5 Electrons

Which of the diagrams below best represents the charge distribution on a metal sphere when a positively charged plastic tube is placed nearby?

• A

• B

• C

• D

If a negatively charged rod touches a conductor, the conductor will be charged by what method?

• Friction

• Induction

• Conduction

• Convection

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

• true
• false

If two balloons have the same charge, what will happen if you place them close to each other?

• Nothing

• They will be attracted

• They will pop

• They will push each other away.

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

• the plastic strip acquired extra protons from the cotton.

• the plastic strip acquired extra protons from the charging process

• protons were created as the result of the charging process

• the plastic strip lost electrons to the cotton during the charging process

Two similar metal spheres, A and B, have charges of +2 x 10^-6 coulomb and +1 x 10^-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4N. What is the magnitude of the electrostatic force on B due to A?

• 2 N

• 4 N

• 8 N

• 1 N

2 charged objects both feel a force of 200 N. If q1 becomes 3 times bigger, what is the new force?

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

• protons are transferred from the wool to the rod
• protons are transferred from the rod to the wool
• electrons are transferred from the rod to the wool
• electrons are transferred from the wool to the rod