Applications of Electric Fields

Identical charges A, B, and C are located between two oppositely charged parallel plates, as shown in the diagram below. The magnitude of the force exerted on the charges by the electric field between the plates is

• least on A and greatest on C

• the same on A and C, but less on B

• the same for A, B, and C

• greatest on A and least on 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

• 1.44 x 10⁴⁴ N/C

• 3.68 x 10^-44 N/C

• 3.68 x 10⁶ N/C

Tags

NGSS.HS-PS2-4

An electrostatic force of 20 Newtons is exerted on a charge of 8.0 x 10^-2 Coulomb at point P in an electric field. What is the magnitude of the electric field intensity at P?

• 1.6 N/C

• 20. N/C

• 2.5 x 10² N/C

• 4.0 x 10^-3 N/C

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

An object with a net charge of 4.80 x 10^-6 coulomb experiences an electrostatic force having a magnitude of 6.00 x 10^-2 newton when placed near a negatively charged metal sphere. What is the electric field strength at this location?

• 2.88 x 10^-8 N/C directed toward the sphere

• 1.25 x 10⁴ N/C directed toward the sphere

• 2.88 x 10^-8 N/C directed away from the sphere

• 1.25 x 10⁴ N/C directed away from the sphere

Tags

NGSS.HS-PS2-4

Which graph best represents the relationship between the strength of an electric field and distance from a point charge?

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Tags

NGSS.HS-PS3-5

The diagram above represents a source of potential difference connected to two large, parallel metal plates separated by a distance of 4.0 x 10^-3 meter. Which statement best describes the electric field strength between

the plates?

• It is the same at points A, B, and C.

• It is a maximum at point C.

• It is zero at point B.

• It is a maximum at point B.

The diagram above shows a point, P, located midway between two oppositely charged parallel plates.

If an electron is introduced at point P, the electron will

• accelerate toward the negatively charged plate

• travel at constant speed toward the negatively charged plate

• travel at constant speed toward the positively charged plate

• accelerate toward the positively charged plate

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

An electron placed between oppositely charged parallel plates A and B moves toward plate A, as represented in the diagram below. What is the direction of the electric field between the plates?

• out of the page

• toward plate B

• into the page

• toward plate A

Tags

NGSS.HS-PS3-5

The diagram below shows the arrangement of three charged hollow metal spheres, A, B, and C. The arrows indicate the direction of the electric forces acting between the spheres. At least two of the spheres are positively charged. Which sphere, if any, could be negatively charged?

• sphere A

• sphere B

• sphere C

• no sphere

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which diagram best represents the electric field around a negatively charged conducting sphere?

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Tags

NGSS.HS-PS2-4