Physics

7 years ago

The magnetic field due to a 2-A current flowing in a long, straight wire is 8 μT at a point P, a ...

The magnetic field due to a 2-A current flowing in a long, straight wire is 8 μT at a point P, a certain distance away from the wire. How far is this point from the center of the wire?
A) 2 cm
B) 3 cm
C) 4 cm
D) 5 cm
E) 6 cm

Brelou 120 1 Reply

7 years ago

The magnetic field due to the current in a long, straight wire is 8.0 μT at a distance of 4.0 cm ...

The magnetic field due to the current in a long, straight wire is 8.0 μT at a distance of 4.0 cm from the center of the wire. What is the current in the wire?
A) 0.20 A
B) 0.40 A
C) 0.80 A
D) 3.2 A
E) 1.6 A

Brelou 115 1 Reply

7 years ago

A long wire carrying a 2.0-A current is placed along the y-axis. What is the magnitude of the ...

A long wire carrying a 2.0-A current is placed along the y-axis. What is the magnitude of the magnetic field at a point 0.60 m along the x-axis?
A) 6.7 × 10-7 T
B) 13 × 10-7 T
C) 1.2 × 10-7 T
D) 6.7 T
E) 12 T

Northa 80 1 Reply

7 years ago

A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in ...

A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field?
A) zero
B) 0.41

Brelou 128 1 Reply

7 years ago

A rectangular loop of wire carrying a 4.0-A current and with certain dimensions is placed in a ...

A rectangular loop of wire carrying a 4.0-A current and with certain dimensions is placed in a magnetic field of 0.60 T. The magnitude of the torque acting on this wire when it makes a 60° angle with the field is 1.1 Nm. What is the area of this wire

Brelou 114 1 Reply

7 years ago

A 1.0-m long wire is carrying a certain amount of current. The wire is placed perpendicular to a ...

A 1.0-m long wire is carrying a certain amount of current. The wire is placed perpendicular to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.60 N, what is the magnitude of the current moving through the wire?
A) 2.0 A

tankster 180 1 Reply

7 years ago

A wire of a certain length, carrying a current of 2.0 A, is placed perpendicular to a magnetic field ...

A wire of a certain length, carrying a current of 2.0 A, is placed perpendicular to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.40 N what is the length of the wire?
A) 2.0 m
B) 3.0 m
C) 1.0 m
D) 20 m

Northa 125 1 Reply

7 years ago

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with ...

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic fie

tankster 99 1 Reply

7 years ago

A straight wire 20 cm long, carrying a current of 4 A, is in a uniform magnetic field of 0.6 T. What ...

A straight wire 20 cm long, carrying a current of 4 A, is in a uniform magnetic field of 0.6 T. What is the force on the wire when it is at an angle of 30° with respect to the field?
A) 0.2 N
B) 0.3 N
C) 0.4 N
D) 0.5 N
E) 0.6

Northa 167 1 Reply

7 years ago

A wire carrying a 2-A current is placed at an angle of 60° with the respect to a magnetic field of ...

A wire carrying a 2-A current is placed at an angle of 60° with the respect to a magnetic field of strength 0.2 T. If the length of the wire is 0.6 m what is the magnitude of the magnetic force acting on the wire?
A) 0.4 N
B) 0.2 N
C)

Brelou 94 1 Reply

7 years ago

An electron is accelerated from rest through a potential difference of 3750 V. It enters a region ...

An electron is accelerated from rest through a potential difference of 3750 V. It enters a region where the magnetic field is 4.0 mT perpendicular to the velocity of the electron. Calculate the radius of the path this electron will follow.
A) 1.

tankster 196 1 Reply

7 years ago

An electron moving perpendicular to a magnetic field of 3.2 × 10-2 T moves in a circle of radius ...

An electron moving perpendicular to a magnetic field of 3.2 × 10-2 T moves in a circle of radius 0.40 cm. How fast is this electron moving?
A) 2.3 × 107 m/s
B) 1.9 × 10-53 m/s
C) 1.9 × 10-30 m/s
D) 3.0 × 109 m/s
E) 0.80 × 107

tankster 308 1 Reply

7 years ago

An electron moves with a speed of 8.0 × 106 m/s along the +x-axis. It enters a region where there ...

An electron moves with a speed of 8.0 × 106 m/s along the +x-axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of 60° to the +x-axis and lying in the x-y plane. Calculate the magnitude of the accelera

tankster 140 1 Reply

7 years ago

An electron moves with a speed of 3.0 × 104 m/s perpendicular to a uniform magnetic field of 0.40 ...

An electron moves with a speed of 3.0 × 104 m/s perpendicular to a uniform magnetic field of 0.40 T. What is the magnitude of the magnetic force on the electron?
A) 4.8 × 10-14 N
B) 1.9 × 10-15 N
C) 5 × 10-20 N
D) 2.2 × 10-2

Brelou 111 1 Reply

7 years ago

A proton moving with a velocity of 4.0 × 104 m/s along the +y-axis enters a magnetic field of 0.20 ...

A proton moving with a velocity of 4.0 × 104 m/s along the +y-axis enters a magnetic field of 0.20 T directed towards the -x-axis. What is the magnitude force acting on the proton?
A) 8.0 × 10-15 N
B) 3.9 × 10-15 N
C) 2.6 × 10-15 N

tankster 94 1 Reply

7 years ago

A proton moving with a velocity of 4.0 × 104 m/s enters a magnetic field of 0.20 T. If the angle ...

A proton moving with a velocity of 4.0 × 104 m/s enters a magnetic field of 0.20 T. If the angle between the velocity of the proton and the direction of the magnetic field is 60°, what is the magnitude of the force on the proton?
A) 1.8 × 10-15

tankster 84 1 Reply

7 years ago

A proton moving eastward with a velocity of 5.0 × 103 m/s enters a magnetic field of 0.20 T ...

A proton moving eastward with a velocity of 5.0 × 103 m/s enters a magnetic field of 0.20 T pointing northward. What is the magnitude and direction of the force that acts on the proton?
A) 0 N
B) 1.6 × 10-16 N upwards
C) 1.6

tankster 127 1 Reply

7 years ago

A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic ...

A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton?
A) zero
B) 1.6 × 10-20 N
C) 3.2 × 10-20 N
D) 1.6 × 10-21 N
E) 3.2 × 10-21 N

tankster 235 1 Reply

7 years ago

What is the magnetic field at the center of a circular loop of wire of radius 4.0 cm when a current ...

What is the magnetic field at the center of a circular loop of wire of radius 4.0 cm when a current of 2.0 A flows in the wire?

Northa 135 1 Reply

7 years ago

What is the magnetic moment of a rectangular loop of 120 turns that carries 6.0 A if its dimensions ...

What is the magnetic moment of a rectangular loop of 120 turns that carries 6.0 A if its dimensions are 40. mm × 8.0 cm?

tankster 130 1 Reply

7 years ago

An ion enters a mass spectrometer which has a 0.18 Tesla field perpendicular toan electric field of ...

An ion enters a mass spectrometer which has a 0.18 Tesla field perpendicular to
an electric field of 1.6 kV/m and selects a velocity. The same magnetic field is then
used to deflect the singly charged ion into a circular path of radius 12.5

Northa 143 1 Reply

7 years ago

When you double the number of windings in a solenoid keeping all other parameters (radius, length ...

When you double the number of windings in a solenoid keeping all other parameters (radius, length and current) fixed, the magnetic field at the center of the solenoid will
A) double.
B) triple.
C) quadruple.
D) be reduced to one-f

tankster 135 1 Reply

7 years ago

A charged particle moving with a certain velocity along the +x-axis enters a magnetic field pointing ...

A charged particle moving with a certain velocity along the +x-axis enters a magnetic field pointing toward the +z-axis. Because of an electric field along the +y-axis the charge particle continues to move along the +x-axis. What is the sign of this

tankster 125 1 Reply

7 years ago

A proton moving in a region of a space does not experience any acceleration in the direction of ...

A proton moving in a region of a space does not experience any acceleration in the direction of motion. Which of the following statements is correct with respect to this situation?
A) The electric and magnetic fields must be perpendicular to eac

Northa 90 1 Reply

7 years ago

An electron, moving west, enters a magnetic field of a certain strength. Because of this field the ...

An electron, moving west, enters a magnetic field of a certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?
A) towards the north
B) towards the south
C) upward
D) downwar

Brelou 243 1 Reply

7 years ago

A proton, moving north, enters a magnetic field of a certain strength. Because of this field the ...

A proton, moving north, enters a magnetic field of a certain strength. Because of this field the proton curves downward. What is the direction of the magnetic field?
A) downward
B) upward
C) towards the east
D) towards the west

Brelou 175 1 Reply

7 years ago

An electron, moving south, enters a magnetic field of certain strength. Because of this field the ...

An electron, moving south, enters a magnetic field of certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?
A) downward
B) towards the east
C) upward
D) towards the west

Northa 127 1 Reply

7 years ago

An electron moving along the +x-axis enters a magnetic field. If the electron experiences a magnetic ...

An electron moving along the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, what is the direction of the magnetic field in this region?
A) along the +z-axis
B) along the -z-axis

Brelou 117 1 Reply

7 years ago

A +2-μC charge is at rest in a magnetic field of 2 T pointing along the +x-axis. What is the force ...

A +2-μC charge is at rest in a magnetic field of 2 T pointing along the +x-axis. What is the force acting on this charge in the magnetic field?
A) -4 μN
B) +4 μN
C) -2 μN
D) +2 μN
E) 0 N

tankster 127 1 Reply

7 years ago

The magnitude of the magnetic field inside a solenoid is inversely proportional to the current ...

The magnitude of the magnetic field inside a solenoid is inversely proportional to the current flowing through the solenoid.

tankster 91 1 Reply

7 years ago

If two identical wires carrying a certain current in the same direction are placed parallel to each ...

If two identical wires carrying a certain current in the same direction are placed parallel to each other, they will experience a force of repulsion.

Northa 68 1 Reply

7 years ago

A wire carrying a current that placed in a magnetic field will experience a maximum force if the ...

A wire carrying a current that placed in a magnetic field will experience a maximum force if the angle between the direction of the current and the direction of the magnetic field is 60°.

Northa 110 1 Reply

7 years ago

The magnetic field unlike the electric field is continuous.

Northa 89 1 Reply

7 years ago

An electric field makes a charged particle accelerate but a magnetic field takes it around in a ...

An electric field makes a charged particle accelerate but a magnetic field takes it around in a circle.

tankster 140 1 Reply

7 years ago

For any displacement of a charged particle, the work done by the magnetic force on the charged ...

For any displacement of a charged particle, the work done by the magnetic force on the charged particle moving in a magnetic field is zero J.

tankster 132 1 Reply

7 years ago

A charged particle traveling opposite to a magnetic field does not experience a magnetic force.

Brelou 180 1 Reply

7 years ago

Magnetic field lines can never cross one another.

Brelou 84 1 Reply

7 years ago

At a given location the direction of the magnetic field is the direction that the north pole of a ...

At a given location the direction of the magnetic field is the direction that the north pole of a compass points when placed at that location.

tankster 92 1 Reply

7 years ago

Describe diamagnetism.

Northa 63 1 Reply