Coulomb's Law

The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the distance doubles?

• 4.8 N

• 1.2 N

• .6 N

• .3 N

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NGSS.HS-PS2-4

Two charges pull on each other with 4.0 µN of force. If one charge is replaced with a charge 8× as big, and the distance is changed to 4× as much, the charges will pull on each other with --- of force.

• 2.0 µN

• 8.0 µN

• 4.0 µN

• 16.0 µN

Tags

NGSS.HS-PS2-4

Which setup of charged particles shown below has the two exert the most force on one another?

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• 
• 

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NGSS.HS-PS2-4

What happens to the force between two charged objects if you double the distance between them and double the magnitude of one charge?

• 4X

• 6X

• 1/2X

• 1/6X

Tags

NGSS.HS-PS2-4

If each of the charges doubles, what happens to the force?

• Quadruples

• Doubles

• Stays the same

• Reduced by half

Tags

NGSS.HS-PS2-4

Electrostatic force F is directly proportional to:

• r^2 (distance squared)

• q1

• q2

• both q1 and q2

Tags

NGSS.HS-PS2-4

A charge of 4 C and -7 C are 200 m apart. What is the force between them?

• 6.3 x 10⁶

• -6.3 x 10⁶

• 2.52 x 10¹¹

• -2.52 x 10¹¹

Tags

NGSS.HS-PS2-4

What variable is a Coulomb the unit for?

• Charge

• Force

• Distance

• Mass

Tags

NGSS.HS-PS2-4

If the distance doubles, what happens to the force?

• Reduced by half

• Reduced by 1/4

• Stays the same

• Quadruples

Tags

NGSS.HS-PS2-4

A negative force between two charges mean they:

• Attract

• Repel

• Are the same sign

• Are opposite signs

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5