Electrostatics, Electric Fields and Coulomb's Law

An electrostatic force of 2 X 10² N is exerted on a charge of 4 Coulomb at point P in an electric field. What is the magnitude of the electric field intensity at P?

• 8 X 10² N/C

• 5 N/C

• 2 X 10^-2 N/C

• 50 N/C

Tags

NGSS.HS-PS2-4

When an object gains electrons it becomes __________

• Neutral

• Positively charged

• Negatively charged

What will be the units of F (or F_e)?

• Newtons

• Meters

• Coulombs

• Joules

Tags

NGSS.HS-PS2-1

Potential difference is measured in

• Joules

• Volts

• Amps

• Coulombs

Which quantity and unit are correctly paired?

• electric field strength and N/C

• electricity and Coulombs

• electrostatic force and electrons

• electric field strength and E

At which point is the electric field the strongest

• A

• B

• C

• D

Tags

NGSS.HS-PS3-5

At which point is the electric field the weakest?

• because it is the furthest away

• because the field lines are further apart

• because the field lines are further apart

•  because it is the furthest away

Tags

NGSS.HS-PS2-4

Consider the electric field lines drawn at the right for a configuration of two charges. Several locations are labeled on the diagram. Which of these shows the ranking in order of weakest to strongest correctly

• E, C

• E, C

• B, A

• D, B

Tags

NGSS.HS-PS3-5

and Q_B are two charges creating an electric field. Based on the electric field lines, we can conclude

• Q_A and Q_B are both positive

• Q_A and Q_B are both negative

• Q_A is positive and Q_B is negative

• Q_A is negative and Q_B is positive

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following is a true statement about the electric field between the two plates?

• The field is attractive between the plates and uniform in strength

• The field is repulsive between the plates and uniform in strength

• The field is attractive between the plates and strongest near the positive

• The field is repulsive between the plates and strongest near the positive

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5