An electron gun sends electrons through a region with an electric field of magnitude 1.5 × 104 N/C for a distance of 2.5 cm. What is the acceleration of the electrons while in this electric field?

A) 1.4 × 108 m/s2 B) 2.6 × 1011 m/s2 C) 1.4 × 1012 m/s2 D) 2.6 × 1015 m/s2 E) 3.0 × 108 m/s2 A) 1.4 × 108 m/s2 B) 2.6 × 1011 m/s2 C) 1.4 × 1012 m/s2 D) 2.6 × 1015 m/s2 E) 3.0 × 108 m/s2

Each atom in a mole of water vapor (H2O) has one electron removed. What is the total charge of the ionized gas?

A) 96 kC B) 290 kC C) 600 kC D) 190 kC A) 96 kC B) 290 kC C) 600 kC D) 190 kC

Exam 16: Electric Forces and Fields

A point charge of 3.0 µC is located on the y-axis at y = 4.0 m, and another point charge of 6.0 µC is located on the x-axis at x = 5.0 m. What is the direction (ccw from the x-axis) of the electric field at (5.0 m, 4.0 m)?

(Multiple Choice)

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Question 21

A horizontally projected beam of electrons travels at 55 km/s into the space between two horizontal, parallel plates. The plates are separated by 7.4 cm, and they are 12 cm long. The uniform electric field between the plates is 7.2 mV/m upward. If the beam enters the region at a height of 3.7 cm above the lower plate, at what height above the lower plate does the beam exit the region? The electron mass is 9.11 × 10^-31 kg.

(Multiple Choice)

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Question 22

A thin spherical shell of radius 20.0 cm has 5.0 µC of charge uniformly distributed over its surface. What is the electric flux through an area of 1.00 m² of a spherical surface concentric with the shell of charge but having a radius of 1.00 m?

(Multiple Choice)

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Question 23

An electron is fired through the space between two oppositely charged, parallel plates. The plates form a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is 1.00 × 10⁷ m/s, what angle will its new velocity make relative to the direction of the original velocity?

(Multiple Choice)

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Question 24

An electron gun sends electrons through a region with an electric field of magnitude 1.5 × 10⁴ N/C for a distance of 2.5 cm. What is the acceleration of the electrons while in this electric field?

(Multiple Choice)

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Question 25

A conducting sphere of radius 10.0 cm holds a net charge of 4.4 µC. What is the surface charge density?

(Multiple Choice)

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Question 26

An electron is fired through the space between two oppositely charged, parallel plates. The plates form a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is 1.00 × 10⁷ m/s, how long does it take to traverse the plates?

(Multiple Choice)

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Question 27

Each atom in a sample of lithium (Z = 3, atomic mass 6.941 u) has all of its electrons removed. If a charge of magnitude 1.0 mC was collected in this way, what is the mass of the lithium sample?

(Multiple Choice)

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Question 28

A hollow conducting spherical shell of radius 1.20 cm carries a charge of −5.20 nC. What is the electric field at a distance of 1.50 cm from the center of the shell?

(Multiple Choice)

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Question 29

Two charges are located on the x-axis. A 22 µC charge is located at the origin and a 47 µC charge is located at x = 4.0 m. What is the magnitude of the electric field at x = 7.5 m?

(Multiple Choice)

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Question 30

When the perpendicular distance from an infinitely long wire with a uniform linear charge distribution is tripled, what happens to the electric field strength?

(Multiple Choice)

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Question 31

Each atom in a mole of water vapor (H₂O) has one electron removed. What is the total charge of the ionized gas?

(Multiple Choice)

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Question 32

What is the total electric flux through a closed surface containing a 2.0 µC charge?

(Multiple Choice)

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Question 33

In a diagram of electric field lines, what is represented by lines that are drawn closer together?

(Multiple Choice)

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Question 34

Arrange the following from smallest to largest.

(Multiple Choice)

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Question 35

The electric field between two oppositely charged, parallel, conducting plates is

(Multiple Choice)

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Question 36

An imaginary spherical surface has radius 1.5 m. Fully contained within and concentric with the spherical surface is a spherical conductor with a uniform surface charge density of 1.5 × 10^-7 C/m². What is its radius if the flux through the imaginary surface is 480 Nm²/C?

(Multiple Choice)

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Question 37

A 4.7 cm radius spherical conducting shell has a uniform surface charge density. What is the surface charge density if the electric field 1.5 m from its center is 17 N/C outward?

(Multiple Choice)

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Question 38

Two alpha particles (helium nuclei) are separated by 4.0 × 10^-15 m. What is the magnitude of the force between the particles due to their charge?

(Multiple Choice)

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Question 39

Two equal point charges are separated by a distance d. When the separation is reduced to d/4, what happens to the force between the charges?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 86

Exam 16: Electric Forces and Fields

A point charge of 3.0 µC is located on the y-axis at y = 4.0 m, and another point charge of 6.0 µC is located on the x-axis at x = 5.0 m. What is the direction (ccw from the x-axis) of the electric field at (5.0 m, 4.0 m)?

A thin spherical shell of radius 20.0 cm has 5.0 µC of charge uniformly distributed over its surface. What is the electric flux through an area of 1.00 m2 of a spherical surface concentric with the shell of charge but having a radius of 1.00 m?

An electron gun sends electrons through a region with an electric field of magnitude 1.5 × 104 N/C for a distance of 2.5 cm. What is the acceleration of the electrons while in this electric field?

A conducting sphere of radius 10.0 cm holds a net charge of 4.4 µC. What is the surface charge density?

Each atom in a sample of lithium (Z = 3, atomic mass 6.941 u) has all of its electrons removed. If a charge of magnitude 1.0 mC was collected in this way, what is the mass of the lithium sample?

A hollow conducting spherical shell of radius 1.20 cm carries a charge of −5.20 nC. What is the electric field at a distance of 1.50 cm from the center of the shell?

Two charges are located on the x-axis. A 22 µC charge is located at the origin and a 47 µC charge is located at x = 4.0 m. What is the magnitude of the electric field at x = 7.5 m?

When the perpendicular distance from an infinitely long wire with a uniform linear charge distribution is tripled, what happens to the electric field strength?

Each atom in a mole of water vapor (H2O) has one electron removed. What is the total charge of the ionized gas?

What is the total electric flux through a closed surface containing a 2.0 µC charge?

In a diagram of electric field lines, what is represented by lines that are drawn closer together?

Arrange the following from smallest to largest.

The electric field between two oppositely charged, parallel, conducting plates is

An imaginary spherical surface has radius 1.5 m. Fully contained within and concentric with the spherical surface is a spherical conductor with a uniform surface charge density of 1.5 × 10-7 C/m2. What is its radius if the flux through the imaginary surface is 480 Nm2/C?

A 4.7 cm radius spherical conducting shell has a uniform surface charge density. What is the surface charge density if the electric field 1.5 m from its center is 17 N/C outward?

Two alpha particles (helium nuclei) are separated by 4.0 × 10-15 m. What is the magnitude of the force between the particles due to their charge?

Two equal point charges are separated by a distance d. When the separation is reduced to d/4, what happens to the force between the charges?

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A thin spherical shell of radius 20.0 cm has 5.0 µC of charge uniformly distributed over its surface. What is the electric flux through an area of 1.00 m² of a spherical surface concentric with the shell of charge but having a radius of 1.00 m?

An electron gun sends electrons through a region with an electric field of magnitude 1.5 × 10⁴ N/C for a distance of 2.5 cm. What is the acceleration of the electrons while in this electric field?

Each atom in a mole of water vapor (H₂O) has one electron removed. What is the total charge of the ionized gas?

An imaginary spherical surface has radius 1.5 m. Fully contained within and concentric with the spherical surface is a spherical conductor with a uniform surface charge density of 1.5 × 10^-7 C/m². What is its radius if the flux through the imaginary surface is 480 Nm²/C?

Two alpha particles (helium nuclei) are separated by 4.0 × 10^-15 m. What is the magnitude of the force between the particles due to their charge?