A cyclotron is designed to accelerate protons (mass 1.67 × 10−27 kg) up to a kinetic energy of 2.5 × 10−13 J. If the radius of the dipole magnets is 96 cm, what is the magnetic field used in the cyclotron?

A) 35 mT B) 0.13 T C) 0.19 T D) 0.21 T A) 35 mT B) 0.13 T C) 0.19 T D) 0.21 T C

If the magnetic field from a long, straight, current-carrying wire has a magnitude B0 at a distance d, what is the magnitude of the field at a distance 2d?

A) also B0 B) 0.707 B0 C) 0.693 B0 D) B0/2 E) B0/4 A) also B0 B) 0.707 B0 C) 0.693 B0 D) B0/2 E) B0/4

A proton is moving at 3.0 × 106 m/s and experiences a magnetic force of magnitude 2.5 × 10−16 N. If the magnetic field makes an angle of 40° with respect to the velocity of the proton, what is the field's magnitude?

A) 1.7 × 10−4 T B) 3.3 × 10−4 T C) 4.1 × 10−4 T D) 8.1 × 10−4 T E) 1.6 × 10−3 T A) 1.7 × 10−4 T B) 3.3 × 10−4 T C) 4.1 × 10−4 T D) 8.1 × 10−4 T E) 1.6 × 10−3 T

Exam 19: Magnetic Forces and Fields

A mass spectrometer splits a beam of ¹⁰B and ¹¹B singly charged ions having the same velocity by passing the beam through a uniform magnetic field. If the radius of the path for the ¹⁰B ions is 12.0 cm, what will be the radius for the ¹¹B ions?

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Question 1

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A long straight wire is carrying a current of 2.4 A in a region where a uniform magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT, what is the magnitude of the force on 3.0 m of the wire?

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Question 2

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A cyclotron is designed to accelerate protons (mass 1.67 × 10⁻²⁷ kg) up to a kinetic energy of 2.5 × 10⁻¹³ J. If the radius of the dipole magnets is 96 cm, what is the magnetic field used in the cyclotron?

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Question 3

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A power line carries 1000 A at a height of 20 m above the ground. What is the resulting magnetic field at ground level?

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Question 4

Two parallel wires run in a north-south direction. The eastern wire carries 15.0 A southward while the western wire carries 6.0 A northward. If the wires are separated by 30 cm, what is the magnitude of the magnetic field at a point between the wires 10 cm from the western wire?

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Question 5

A proton and electron, each travelling with the same velocity, enter a region of uniform magnetic field. They experience

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Question 6

Find the force (magnitude and direction) exerted on an electron moving vertically upward at a speed of 2.0 × 10⁷ m/s by a horizontal magnetic field of 0.50 T directed north.

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Question 7

A charged particle of enters a region of uniform magnetic field at a speed of 2.8 × 10⁶m/s, at an angle of 37 degrees relative to the magnetic field direction. If the magnetic field strength is 1.2 T and the charge of the particle is +e, and the radius of the helical path is 8.8 cm, what is the particle's mass?

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Question 8

A singly charged ⁹Be ion is accelerated from rest through a potential difference of 8000 V. The ion is then sent into a mass spectrometer where the radius of the path is 29 cm. What is the magnetic field in the spectrometer?

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Question 9

When measuring the Hall voltage, what happens to the reading when the current is increased 20%?

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Question 10

A 10 m long wire carrying a current of 22 A makes an angle of 37° with the Earth's magnetic field of 0.51 mT. What is the magnetic force on the wire?

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Question 11

If the magnetic field from a long, straight, current-carrying wire has a magnitude B₀ at a distance d, what is the magnitude of the field at a distance 2d?

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Question 12

What is the speed of a proton in a cyclotron having a 0.50 T magnetic field when the proton is at a distance of 25 cm from the center?

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Question 13

A cyclotron with a magnetic field of 1.2 T is used to accelerate protons. How long does it take for the protons to make one complete trip around the cyclotron at a radius of 25 cm?

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Question 14

A charged particle of mass 1.0 × 10⁻²⁶ kg enters a region of uniform magnetic field at a speed of 2.8 × 10⁶m/s, at an angle of 37 degrees relative to the magnetic field direction. If the magnetic field strength is 1.2 T what will be the radius of the helical path it takes?

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Question 15

A long straight wire is carrying a current of 2.4 A in a region with a uniform magnetic field. If the magnetic field is 0.52 mT and makes an angle of 60° with the wire, what is the magnitude of the force on 3.0 m of the wire?

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Question 16

The magnetic forces exerted on each other by two parallel wires with unequal currents flowing in opposite directions are

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Question 17

The magnetic field in a cyclotron is 0.50 T. Find the magnitude of the magnetic force on a proton with velocity of 1.0 × 10⁷ m/s in a plane perpendicular to the field.

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Question 18

A proton is moving at 3.0 × 10⁶ m/s and experiences a magnetic force of magnitude 2.5 × 10⁻¹⁶ N. If the magnetic field makes an angle of 40° with respect to the velocity of the proton, what is the field's magnitude?

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Question 19

A charged particle having electric charge Q = 4.0e enters a region of magnetic field 1.2 T at an angle of 37 degrees relative to the magnetic field direction. If the speed of the particle upon entering the region is 2.8 × 10⁴ m/s, what is the magnitude of the force on the particle?

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Question 20

Showing 1 - 20 of 68

Exam 19: Magnetic Forces and Fields

A mass spectrometer splits a beam of 10B and 11B singly charged ions having the same velocity by passing the beam through a uniform magnetic field. If the radius of the path for the 10B ions is 12.0 cm, what will be the radius for the 11B ions?

A long straight wire is carrying a current of 2.4 A in a region where a uniform magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT, what is the magnitude of the force on 3.0 m of the wire?

A cyclotron is designed to accelerate protons (mass 1.67 × 10−27 kg) up to a kinetic energy of 2.5 × 10−13 J. If the radius of the dipole magnets is 96 cm, what is the magnetic field used in the cyclotron?

A power line carries 1000 A at a height of 20 m above the ground. What is the resulting magnetic field at ground level?

Two parallel wires run in a north-south direction. The eastern wire carries 15.0 A southward while the western wire carries 6.0 A northward. If the wires are separated by 30 cm, what is the magnitude of the magnetic field at a point between the wires 10 cm from the western wire?

A proton and electron, each travelling with the same velocity, enter a region of uniform magnetic field. They experience

Find the force (magnitude and direction) exerted on an electron moving vertically upward at a speed of 2.0 × 107 m/s by a horizontal magnetic field of 0.50 T directed north.

A singly charged 9Be ion is accelerated from rest through a potential difference of 8000 V. The ion is then sent into a mass spectrometer where the radius of the path is 29 cm. What is the magnetic field in the spectrometer?

When measuring the Hall voltage, what happens to the reading when the current is increased 20%?

A 10 m long wire carrying a current of 22 A makes an angle of 37° with the Earth's magnetic field of 0.51 mT. What is the magnetic force on the wire?

If the magnetic field from a long, straight, current-carrying wire has a magnitude B0 at a distance d, what is the magnitude of the field at a distance 2d?

What is the speed of a proton in a cyclotron having a 0.50 T magnetic field when the proton is at a distance of 25 cm from the center?

A cyclotron with a magnetic field of 1.2 T is used to accelerate protons. How long does it take for the protons to make one complete trip around the cyclotron at a radius of 25 cm?

A charged particle of mass 1.0 × 10−26 kg enters a region of uniform magnetic field at a speed of 2.8 × 106 m/s, at an angle of 37 degrees relative to the magnetic field direction. If the magnetic field strength is 1.2 T what will be the radius of the helical path it takes?

A long straight wire is carrying a current of 2.4 A in a region with a uniform magnetic field. If the magnetic field is 0.52 mT and makes an angle of 60° with the wire, what is the magnitude of the force on 3.0 m of the wire?

The magnetic forces exerted on each other by two parallel wires with unequal currents flowing in opposite directions are

The magnetic field in a cyclotron is 0.50 T. Find the magnitude of the magnetic force on a proton with velocity of 1.0 × 107 m/s in a plane perpendicular to the field.

A proton is moving at 3.0 × 106 m/s and experiences a magnetic force of magnitude 2.5 × 10−16 N. If the magnetic field makes an angle of 40° with respect to the velocity of the proton, what is the field's magnitude?

A charged particle having electric charge Q = 4.0e enters a region of magnetic field 1.2 T at an angle of 37 degrees relative to the magnetic field direction. If the speed of the particle upon entering the region is 2.8 × 104 m/s, what is the magnitude of the force on the particle?

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A mass spectrometer splits a beam of ¹⁰B and ¹¹B singly charged ions having the same velocity by passing the beam through a uniform magnetic field. If the radius of the path for the ¹⁰B ions is 12.0 cm, what will be the radius for the ¹¹B ions?

A cyclotron is designed to accelerate protons (mass 1.67 × 10⁻²⁷ kg) up to a kinetic energy of 2.5 × 10⁻¹³ J. If the radius of the dipole magnets is 96 cm, what is the magnetic field used in the cyclotron?

Find the force (magnitude and direction) exerted on an electron moving vertically upward at a speed of 2.0 × 10⁷ m/s by a horizontal magnetic field of 0.50 T directed north.

A singly charged ⁹Be ion is accelerated from rest through a potential difference of 8000 V. The ion is then sent into a mass spectrometer where the radius of the path is 29 cm. What is the magnetic field in the spectrometer?

If the magnetic field from a long, straight, current-carrying wire has a magnitude B₀ at a distance d, what is the magnitude of the field at a distance 2d?

A charged particle of mass 1.0 × 10⁻²⁶ kg enters a region of uniform magnetic field at a speed of 2.8 × 10⁶m/s, at an angle of 37 degrees relative to the magnetic field direction. If the magnetic field strength is 1.2 T what will be the radius of the helical path it takes?

The magnetic field in a cyclotron is 0.50 T. Find the magnitude of the magnetic force on a proton with velocity of 1.0 × 10⁷ m/s in a plane perpendicular to the field.

A proton is moving at 3.0 × 10⁶ m/s and experiences a magnetic force of magnitude 2.5 × 10⁻¹⁶ N. If the magnetic field makes an angle of 40° with respect to the velocity of the proton, what is the field's magnitude?

A charged particle having electric charge Q = 4.0e enters a region of magnetic field 1.2 T at an angle of 37 degrees relative to the magnetic field direction. If the speed of the particle upon entering the region is 2.8 × 10⁴ m/s, what is the magnitude of the force on the particle?