Electric field

The unit of electric field is not equivalent to

• N/C

• J/C

• V/m

• J/Coulomb.meter

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NGSS.HS-PS2-4

NGSS.HS-PS3-5

In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?

• Right
• Left
• Up 
• Down

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NGSS.HS-PS2-4

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

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NGSS.HS-PS2-4

A point charge Q is far from all other charges. At a distance of 2 m from Q, the electric field is 20 N/C. What is the force a charge of 5 Coulombs feels?

• 4 N
• 100 N
• 40 N
• 10 N

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

An electrostatic force of 2 X 10². newtons is exerted on a charge of 4 coulomb at point P in an electric field. The magnitude of the electric field intensity at P is

• 8 X 10² N/C
• 5 N/C
• 2 X 10^-2 N/C
• 50 N/C

Tags

NGSS.HS-PS2-4

What is the magnitude of the electric field intensity at a point where a proton experiences an electrostatic force of magnitude 2.30 x 10^-25 newton?

• 1.44 x 10^-6 N/C
• 3.68 x 10⁶ N/C
• 1.44 x 10⁴⁴ N/C
• 3.68 x 10^-44 N/C

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Where can an electric field be found?

• below a force field

• in a gravitational field

• in the space surrounding a charged object

• outside of a magnetic field

Tags

NGSS.HS-PS3-5

Electric field is directly proportional to the charge and inversely proportional to the magnitude of electric force. True or False?

• True

• False

Tags

NGSS.HS-PS2-4

When two objects have opposite charge (+ and -), they are:

• Attracted to each other
• Repelled by each other
• Have no effect on each other

When two objects have the same charge, they are (such as + and +)

• Attracted to each other
• Repelled by each other
• Have no effect on each other