問題一覧
1
The attractive or repulsive force felt by a charge when it is moving in a magnetic field
2
Charge, q (Coulombs, C) × Velocity, v (m/s) × Magnetic Flux Density, B (Tesla, T) × sin(Angle between Velocity and Field Lines), Magnetic Flux Density, B (Tesla, T) × Current, I (Amps, A) × Length of Wire, l (metres, m) × sin(Angle between field lines and wire)
3
A measure of how dense the magnetic field lines are, measured in a Tesla
4
When the velocity is perpendicular to the field lines
5
When the velocity is parallel to the field lines
6
A method of determining the direction of a magnetic force on either a current carrying wire, or a charged particle
7
From the north pole to the south pole
8
Thumb - Direction of the Force on the wire, First Finger - Direction of the magnetic field , Middle Finger - Direction of the conventional current
9
Two of the three quantities will be given in the question, Place your first three fingers at right angles to each other, Line up your fingers with the directions of the two quantities given in the question to find the direction of the unknown quantity
10
A force being applied in a current carrying wire in a magnetic field
11
Out of the page
12
Place a wire on a top pan balance, and place them in a magnetic field at a right angle, Put a low current through the wire, Find the force using the length of the wire in the field, the current, the field strength, and the angle of the wire to the field, Plot a graph of force against current, which should be a straight line through the origin with a gradient of BLsinθ
13
Into the page
14
Because the force exerted is always perpendicular to the motion of travel and the direction of a magnetic field, and so acts as a centripetal force, causing it to take a circular path
15
F = BQV relates to the force on a charged particle, whereas F = BIL relates to the force on a current carrying wire
16
Thumb - Direction of the Force on the particle, First Finger - Direction of the magnetic field , Middle Finger - Direction that a positive charge would move in (direction of conventional current)
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11問 • 2年前問題一覧
1
The attractive or repulsive force felt by a charge when it is moving in a magnetic field
2
Charge, q (Coulombs, C) × Velocity, v (m/s) × Magnetic Flux Density, B (Tesla, T) × sin(Angle between Velocity and Field Lines), Magnetic Flux Density, B (Tesla, T) × Current, I (Amps, A) × Length of Wire, l (metres, m) × sin(Angle between field lines and wire)
3
A measure of how dense the magnetic field lines are, measured in a Tesla
4
When the velocity is perpendicular to the field lines
5
When the velocity is parallel to the field lines
6
A method of determining the direction of a magnetic force on either a current carrying wire, or a charged particle
7
From the north pole to the south pole
8
Thumb - Direction of the Force on the wire, First Finger - Direction of the magnetic field , Middle Finger - Direction of the conventional current
9
Two of the three quantities will be given in the question, Place your first three fingers at right angles to each other, Line up your fingers with the directions of the two quantities given in the question to find the direction of the unknown quantity
10
A force being applied in a current carrying wire in a magnetic field
11
Out of the page
12
Place a wire on a top pan balance, and place them in a magnetic field at a right angle, Put a low current through the wire, Find the force using the length of the wire in the field, the current, the field strength, and the angle of the wire to the field, Plot a graph of force against current, which should be a straight line through the origin with a gradient of BLsinθ
13
Into the page
14
Because the force exerted is always perpendicular to the motion of travel and the direction of a magnetic field, and so acts as a centripetal force, causing it to take a circular path
15
F = BQV relates to the force on a charged particle, whereas F = BIL relates to the force on a current carrying wire
16
Thumb - Direction of the Force on the particle, First Finger - Direction of the magnetic field , Middle Finger - Direction that a positive charge would move in (direction of conventional current)