LL5 [Coulomb's Law]

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Multiple Choice

What is the electrostatic force between the charges when they are both set to +5µC and their centers are a distance of 4 cm apart? (Use scientific notation)

• 140.430 N

• 20 N

• 1.4x10^2 N

Multiple Choice

Is the force attractive or repulsive?

• Attractive

• Repulsive

Open Ended

How can you tell the force is repulsive?

Multiple Choice

How does the force change when one of the charges is changed to -5µC?

• It zeroes out

• It doubles

• It stays the same value but changes direction

• It changes value but stays in the same direction

Open Ended

What happens when both charges are set to -5µC?

Multiple Choice

What is the electrostatic force between them? (Use scientific notation)

• 0.000003605 N

• 25 N

• 3.61x10^-6 N

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Why would it make sense to use scientific notation in this situation?

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What happens to the magnitude of the force when you double q1? What happens if you instead double q2?

Open Ended

What happens if both charges are doubled? Is this consistent with Coulomb's Law? Explain.

Multiple Choice

What happens to the value of the force when the distance is decreased to 2cm?

• force increases as distance decreases

• force decreases as distance decreases

• force remains the same as distance decreases

• force increases as distance increases

Multiple Choice

What happens to the value of the force when the distance is increased to 8cm?

• force decreases as distance decreases

• force decreases as distance increases

• force remains the same as distance increases

• force increases as distance increases

Multiple Choice

What type of relationship exists between electrostatic force and distance?

• directly proportional

• inversely proportional

• they do not impact one another

Multiple Choice

What type of relationship exists between electrostatic force and electric charge?

• directly proportional

• inversely proportional

• they do not impact one another

Helpful Links

Videos:

Coulomb’s Law - Khan Academy

Electric Charge - Crash Course

Article:

Coulomb’s Law - Khan Academy

Textbook Chapter:

Coulomb’s Law - Tennessee Tech

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Please share either one thing you learned from today's lesson, or one question you still have about the content we are covering. Thank you!