Coulomb's Law

Physics 5 (A &C)

Coulombs Law Introduction

Multiple Choice

Which formula is the correct equation for Coulombs Law?

Multiple Choice

What does the k stand for in this formula?

• Coulomb constant

• Electric Force

• Charge on object 1

• Charge on object 2

• distance between the centers of the charges of mass

Multiple Choice

What does the q1 stand for in this formula?

• Coulomb constant

• Electric Force

• Charge on object 1

• Charge on object 2

• distance between the centers of the charges of mass

Multiple Choice

What does the q2 stand for in this formula?

• Coulomb constant

• Electric Force

• Charge on object 1

• Charge on object 2

• distance between the centers of the charges of mass

Multiple Choice

What does  $$r^2$$  the stand for in this formula?

• Coulomb constant

• Electric Force

• Charge on object 1

• Charge on object 2

• distance between the centers of the charges of mass (squared)

Multiple Choice

What does the Fe stand for in this formula?

• Coulomb constant

• Electric Force

• Charge on object 1

• Charge on object 2

• distance between the centers of the charges of mass (squared)

Multiple Select

For Coulombs Law, r is NOT... you may choose more than one answer

• the radius

• the distance between the center of mass

• the distance between the center of the charges of mass

Multiple Choice

Which is the stronger force: the force of gravity acting on the attracted object or the electric force acting on the attracted object.

• force of gravity

• the electric force

Multiple Choice

(Warning! The numbers here are slightly different than the video)

Two equal magnitude point charges are located 2.5 meters apart. If the magnitudes of their charges are both 15.0 C, however one is negative and one is positive.

Assume q1 is positive and q2 is negative.

What is the charge of q1?

• 15.0 C

• -15.0 C

• 2.5 m

• 6.25 m

• 8.99E9

Multiple Choice

(Warning! The numbers here are slightly different than the video)

Two equal magnitude point charges are located 2.5 meters apart. If the magnitudes of their charges are both 15.0 C, however one is negative and one is positive.

Assume q1 is positive and q2 is negative.

What is the charge of q2?

• 15.0 C

• -15.0 C

• 2.5 m

• 6.25 m

• 8.99E9

Multiple Choice

(Warning! The numbers here are slightly different than the video)

Two equal magnitude point charges are located 2.5 meters apart. If the magnitudes of their charges are both 15.0 C, however one is negative and one is positive.
Assume q1 is positive and q2 is negative.
What is the magnitude of r ?

• 15.0 C

• -15.0 C

• 2.5 m

• 6.25 m

• 8.99E9

Multiple Choice

(Warning! The numbers here are slightly different than the video)

Two equal magnitude point charges are located 2.5 meters apart. If the magnitudes of their charges are both 15.0 C, however one is negative and one is positive.
Assume q1 is positive and q2 is negative.
What is the magnitude of  $$r^2$$  ?

• 15.0 C

• -15.0 C

• 2.5 m

• 6.25 m

• 8.99E9

Multiple Choice

(Warning! The numbers here are slightly different than the video)

Two equal magnitude point charges are located 2.5 meters apart. If the magnitudes of their charges are both 15.0 C, however one is negative and one is positive.
Assume q1 is positive and q2 is negative.
What do we use for coulombs constant (k) ?

• 15.0 C

• -15.0 C

• 2.5 m

• 6.25 m

• 8.99E9

Multiple Choice

In the video, it was decided that if your answer turned out negative, it indicated the force was an _______ force.

• attractive force

• repulsive force

Multiple Choice

If you have two positive charges, will your answer be positive or negative, and therefore repel or attract each other?

• positive & attract

• positive & repel

• negative & attract

• negative & repel

Multiple Choice

If you have two negative charges, will your answer be positive or negative, and therefore repel or attract each other?

• positive & attract

• positive & repel

• negative & attract

• negative & repel

Multiple Choice

If you have one negative charge and one positive charge, will your answer be positive or negative, and therefore repel or attract each other?

• positive & attract

• positive & repel

• negative & attract

• negative & repel

Way to Go!! You're Done!