In an electron gun, electrons are accelerated through a region with an electric field of magnitude 1.5 × 104 N/C for a distance of 2.5 cm. If the electrons start from rest, how long does it take for the electrons to traverse the gun?

A) 1.1 ns B) 1.1 µs C) 2.2 ns D) 2.2 µs E) 4.4 ns A) 1.1 ns B) 1.1 µs C) 2.2 ns D) 2.2 µs E) 4.4 ns

Exam 16: Electric Forces and Fields

Four point charges are located at the corners of a square, 1.00 m by 1.00 m. On each of two diagonally opposite corners are 1.00 µC charges. On each of the other two corners are −1.00 µC charges. What is the magnitude of the force on one of the positive charges?

(Multiple Choice)

4.8/5

(92)

Question 41

Household wiring is made with

(Multiple Choice)

4.9/5

(80)

Question 42

Electrons are collected by removing them from the atoms in a sample of water vapor (H₂O, molecular mass 18 u). If every hydrogen atom has lost an electron in the process, what is the mass of the sample if a charge of magnitude 1.0 C was collected?

(Multiple Choice)

4.7/5

(79)

Question 43

A charged metal sphere has a mass of 15 µg and a net charge of −1.5 mC. What vertical electric field would cause this sphere, if projected horizontally, to continue in a straight line?

(Multiple Choice)

4.8/5

(84)

Question 44

The electric field has a magnitude of 3.00 N/C at a distance of 60.0 cm from a point charge. What is the charge?

(Multiple Choice)

4.9/5

(93)

Question 45

Electric field lines symbolize

(Multiple Choice)

4.9/5

(88)

Question 46

A horizontally projected beam of electrons travels at 55 km/s into the space between two horizontal, parallel plates. The beam travels exactly horizontally the whole time it is between the plates. What does this imply about the electric field between the plates?

(Multiple Choice)

4.8/5

(68)

Question 47

A long linear charge distribution of uniform charge density 1.35 nC/m is surrounded by a concentric cylindrical surface of length 1.60 m and radius 23.6 cm. What is the electric flux through the surface of the cylinder?

(Multiple Choice)

4.8/5

(73)

Question 48

In an electron gun, electrons are accelerated through a region with an electric field of magnitude 1.5 × 10⁴ N/C for a distance of 2.5 cm. If the electrons start from rest, how long does it take for the electrons to traverse the gun?

(Multiple Choice)

4.9/5

(102)

Question 49

A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 µC placed on it. At the center of the shell is placed a point charge of 2.00 µC. What is the electric field at a distance of 30.0 cm from the center of the spherical shell?

(Multiple Choice)

4.9/5

(78)

Question 50

A horizontally projected beam of protons 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 V/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 proton mass is 1.67 × 10^-27 kg.

(Multiple Choice)

4.8/5

(78)

Question 51

The word electric comes from the Greek word for

(Multiple Choice)

4.9/5

(77)

Question 52

A 3.7 pC charge experiences a force of 8.1 × 10^-7 N in an electric field. What is the magnitude of the electric field?

(Multiple Choice)

4.9/5

(91)

Question 53

When an object is polarized, it

(Multiple Choice)

4.8/5

(84)

Question 54

A thin metallic shell of radius 40 cm has a charge of −25 nC on it. At the center of the sphere is a point charge of 35 nC. What is the electric field 15 cm from the center of the shell?

(Multiple Choice)

5.0/5

(70)

Question 55

If the electric field due to a point charge is 17 N/C at a distance of 1.5 m, what is the electric flux through a 1.5 m-radius imaginary spherical surface centered on the point charge?

(Multiple Choice)

4.9/5

(68)

Question 56

Pure water is classified as

(Multiple Choice)

4.8/5

(83)

Question 57

An electric dipole is surrounded by a closed surface with the surface nearer to the negative end of the dipole than the positive end. The flux through the surface is

(Multiple Choice)

5.0/5

(72)

Question 58

Some household appliances have plugs with two prongs while others have three prongs. The additional prong is

(Multiple Choice)

4.9/5

(73)

Question 59

The electron orbiting the proton in the hydrogen atom is at a distance of 5.3 × 10^-9 m. What is the ratio of the electric force to the gravitational force between these particles? (The mass of the proton is 1.67 × 10^-27 kg and the mass of the electron is 9.11 × 10^-31 kg.)

(Multiple Choice)

4.7/5

(79)

Question 60

Showing 41 - 60 of 86

Exam 16: Electric Forces and Fields

Four point charges are located at the corners of a square, 1.00 m by 1.00 m. On each of two diagonally opposite corners are 1.00 µC charges. On each of the other two corners are −1.00 µC charges. What is the magnitude of the force on one of the positive charges?

Household wiring is made with

Electrons are collected by removing them from the atoms in a sample of water vapor (H2O, molecular mass 18 u). If every hydrogen atom has lost an electron in the process, what is the mass of the sample if a charge of magnitude 1.0 C was collected?

A charged metal sphere has a mass of 15 µg and a net charge of −1.5 mC. What vertical electric field would cause this sphere, if projected horizontally, to continue in a straight line?

The electric field has a magnitude of 3.00 N/C at a distance of 60.0 cm from a point charge. What is the charge?

Electric field lines symbolize

A horizontally projected beam of electrons travels at 55 km/s into the space between two horizontal, parallel plates. The beam travels exactly horizontally the whole time it is between the plates. What does this imply about the electric field between the plates?

A long linear charge distribution of uniform charge density 1.35 nC/m is surrounded by a concentric cylindrical surface of length 1.60 m and radius 23.6 cm. What is the electric flux through the surface of the cylinder?

In an electron gun, electrons are accelerated through a region with an electric field of magnitude 1.5 × 104 N/C for a distance of 2.5 cm. If the electrons start from rest, how long does it take for the electrons to traverse the gun?

A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 µC placed on it. At the center of the shell is placed a point charge of 2.00 µC. What is the electric field at a distance of 30.0 cm from the center of the spherical shell?

The word electric comes from the Greek word for

A 3.7 pC charge experiences a force of 8.1 × 10-7 N in an electric field. What is the magnitude of the electric field?

When an object is polarized, it

A thin metallic shell of radius 40 cm has a charge of −25 nC on it. At the center of the sphere is a point charge of 35 nC. What is the electric field 15 cm from the center of the shell?

If the electric field due to a point charge is 17 N/C at a distance of 1.5 m, what is the electric flux through a 1.5 m-radius imaginary spherical surface centered on the point charge?

Pure water is classified as

An electric dipole is surrounded by a closed surface with the surface nearer to the negative end of the dipole than the positive end. The flux through the surface is

Some household appliances have plugs with two prongs while others have three prongs. The additional prong is

The electron orbiting the proton in the hydrogen atom is at a distance of 5.3 × 10-9 m. What is the ratio of the electric force to the gravitational force between these particles? (The mass of the proton is 1.67 × 10-27 kg and the mass of the electron is 9.11 × 10-31 kg.)

Introduction

Motion Along a Line

Motion in a Plane

Force and Newtons Laws of Motion

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

Electrons are collected by removing them from the atoms in a sample of water vapor (H₂O, molecular mass 18 u). If every hydrogen atom has lost an electron in the process, what is the mass of the sample if a charge of magnitude 1.0 C was collected?

In an electron gun, electrons are accelerated through a region with an electric field of magnitude 1.5 × 10⁴ N/C for a distance of 2.5 cm. If the electrons start from rest, how long does it take for the electrons to traverse the gun?

A 3.7 pC charge experiences a force of 8.1 × 10^-7 N in an electric field. What is the magnitude of the electric field?

The electron orbiting the proton in the hydrogen atom is at a distance of 5.3 × 10^-9 m. What is the ratio of the electric force to the gravitational force between these particles? (The mass of the proton is 1.67 × 10^-27 kg and the mass of the electron is 9.11 × 10^-31 kg.)