Electrostatics

Have you watched the video on Electricity by Paul Hewitt:

• Yes

• No

Paul Hewitt says that the new concepts that we about to learn in electricity are similar to which concepts that we have already studied before?

• Motion and inertia

• Fluids and Gravity

• Gravity and Black Holes

• Matter and Projectile Motions

Did you watch Paul Hewitt's video on Coulomb's Law?

• Yes

• No

Like charges __________ and opposite charges ________.

• attract, repel

• attract, attract

• repel, attract

• repel, repel

Tags

NGSS.HS-PS3-5

The Electric force is most similar to what other fundamental force in the universe?

• Gravitational force

• Strong nuclear force

• Weak nuclear force

• The Force in Star Wars

Go to the PhET model of Coulomb's Law here: (Cut and paste into an url to visit) * Use for problems (6-13)

‪https://phet.colorado.edu/en/simulation/coulombs-law

Choose the "Macro Scale" button. By default, charge 1 (blue) has a value of -4 uC (micro-Coulombs). The negative value indicates that this particle (labeled q1) has a ___________ charge.

• Negative

• Positive

• Neutral

By default, charge 2 (red) has a value of +8 uC (micro-Coulombs). The positive value indicates that this particle (labeled q2) has a ___________ charge.

• Negative

• Positive

• Positive

If q1 = -4 uC and q2 = +8; these charges will ________ one another.

• attract

• repel

• do nothing

Move the position of q2 to the 8 cm position. The distance between the two charges is _____ and the force between q1 and q2 is approximately _____.

• 4 cm; 180 N

• 8 cm; 180 N

• 2 cm; 720 N

• 1 cm; 1500 N

Move the position of q2 to the 6 cm position. The distance between the two charges is now _____ and the force between q1 and q2 is approximately _____.

• 4 cm; 180 N

• 8 cm; 180 N

• 2 cm; 720 N

• 1 cm; 1500 N