AP electrostatics

An atom loses an electron. What type of charge does it have now?

• positive

• negative

• neutral

An atom gains an electron.  What type of charge does it have now?

• positive
• negative
• No charge

The SI unit of charge is

• the ampere
• the newton
• the coulomb
• the joule

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.

As two oppositely charged particles approach each other, what happens to the electrical force between them?

• The attractive force increases

• The magnitude of the electric force decreases

• The repulsive force increases

• The magnitude of their charges increases

When distance increases, electrostatic force ____________; we call this relationship ____________ proportional

• decreases;directly
• decreases;inversely
• increases;inversely
• increases;directly

The Electric Force is strongest when charges are...

• close together
• far apart
• the electric force is constant everywhere

Which is the value of the constant in Coulomb's equation?

• k = 9·10^-9

• k = 9.8

• k = 6.67·10^-11

• k = 9 ·10⁹

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

What happens to the force between two charged objects when you double the distance between them?

• it doubles

• it is cut in half

• it quadruples

• it is cut by 1/4