Electric Charge & Coulomb's Law Retake

Which set of particles experience an attractive force?

• Two Protons

• Two Electrons

• Two Neutrons

• Proton and Electron

• Neutron and Proton

A repulsive force exists between which particles?

• Two Neutrons

• Two Electrons

• Proton and Electron

• Proton and Neutron

• Electron and Neutron

As two charged particles move further apart from each other, the electric force between them....

• ...increases

• ...decreases

• ...remains constant

• ...changes the charges from positive to negative

If the distance between two charged particles were halved, what would happen to the force between the two particles?

• It would double

• It would Quadruple

• It would be half as large

• It would be 1/4th as large

• It would remain constant

If a positively Charged conductor (A) were brought into contact with a neutral conductor (B), what would best describe what happens?

• Electrons would flow from A to B

• Electrons would flow from B to A

• Protons would flow from A to B

• Protons would flow from B to A

• Nothing

What is the SI unit for Charge

• J

• C

• N

• m

• Q

Electrostatic force (F) is DIRECTLY proportional to:

• Distance (r)

• Distance Squared (r^2)

• Only charge one (q1)

• Both Charges (q1 and q2)

• Only charge 2 (q2)

Electrostatic force is INVERSELY proportional to:

• distance squared (r^2)

• Coulombs Constant (k)

• Both Charges (q1 and q2)

• Force (F)

What is the electrostatic force between two particles given the following properties: r = 4.0 m; q1 = 2.0 C; q2 = 6.0 C

• $2.7\ \times10^{10}\ N$

• $6.7\ \times10^9\ N$

• $27\ N$

• $3.0\ N$

What is the value of Coulomb's Constant?

• $k\ =\ 8.99$

• $k\ =\ 8.99\ \times10^{-9}$

• $k\ =\ 9$

• $k\ =\ 8.99\ \times10^9$

• $k\ =\ 8.99e9$