Statics Review

In the diagram below, a negatively charged rod is placed between, but does not touch, identical small metal spheres R and S hanging from insulating threads.

• Sphere R must be negative and sphere S must be positive.

• Sphere R must be negative and sphere S may be positive or neutral.

• Sphere R must be positive and sphere S must be negative.

• Sphere R must be positive and sphere S may be negative or neutral.

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NGSS.HS-PS2-4

A particle enters the electric field between two oppositely charged parallel plates, as represented in the diagram. Which particle will be deflected toward the positive plate as it enters the electric field?

• photon

• proton

• electron

• neutrino

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NGSS.HS-PS2-4

NGSS.HS-PS3-5

As a student runs a plastic comb through her hair, the comb acquires a negative electric charge. This charge results from the transfer of

• protons from the comb to her hair

• protons from her hair to the comb

• electrons from the comb to her hair

• electrons from her hair to the comb

A glass rod is rubbed with silk. During this process, a positive charge is given to the glass rod by

• adding electrons to the rod

• adding protons to the rod

• removing electrons from the rod

• removing protons from the rod

When an isolated conductor is placed in the vicinity of a positive charge, the conductor is attracted to the charge. The charge of the conductor

• must be positive

• must be negative

• could be neutral or positive

• could be neutral or negative(

Which statement describes the gravitational force and the electrostatic force between two charged particles?

• The gravitational force may be either attractive or repulsive, whereas the electrostatic force must be attractive.

• The gravitational force must be attractive, whereas the electrostatic force may be either attractive or repulsive.

• Both forces may be either attractive or repulsive.

• Both forces must be attractive.

Tags

NGSS.HS-PS2-4

An electric field exerts an electrostatic force of magnitude 1.5 × 10⁻¹⁴ newton on an electron within the field. What is the magnitude of the electric field strength at the location of the electron?

• 2.4 × 10⁻³³ N/C

• 1.1 × 10⁻⁵ N/C

• 9.4 × 10⁴ N/C

• 1.6 × 10¹⁶ N/C

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

The diagram below represents the electric field in the region of two small charged spheres, A and B.What is the sign of the net charge on A and B?

• A is positive and B is positive.

• A is positive and B is negative.

• A is negative and B is negative.

• A is negative and B is positive.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

An electrical force of 8.0 × 10⁻⁵ newton exists between two point charges, q₁ and q₂. If the distance between the charges is doubled, the new electrical force between the charges will be

• 1.6 × 10⁻⁴ N

• 2.0 × 10⁻⁵ N

• 3.2 × 10⁻⁴ N

• 4.0 × 10⁻⁵ N

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

How much work is required to move an electron through a potential difference of 3.00 volts?

• 5.33 × 10^-20 J

• 4.80 × 10^-19 J

• 3.00 J

• 1.88 × 10¹⁹ J

Tags

NGSS.HS-PS3-1