6.3.1 Magnetic Fields

• The density of magnetic field lines indicates the strength of the magnetic field.


  True
• Magnetic field lines point from the north pole to the south
• A magnetic field exerts force on both stationary and moving charges.

  False
• Magnetic field lines point from the north pole to the south
• A magnetic field exerts force on both stationary and moving charges.

  False
• The density of magnetic field lines indicates the strength of the magnetic field.


  True
• Closer magnetic field lines indicate a stronger magnetic field.


  True
• A moving charge creates a magnetic field, while a stationary charge creates an electric
• How is the strength of a magnetic field indicated?

  Density of field lines
• The density of magnetic field lines indicates the strength of the magnetic field.


  True
• What type of charges does a magnetic field exert force on?

  Moving charges
• What does the right-hand rule determine in the context of magnetic force on a moving charge?

  Force direction
• What creates a magnetic field around itself?

  Moving charge
• What indicates the strength and direction of a magnetic field?

  Magnetic field lines
• What do magnetic field lines show the path of?

  A small compass needle
• What is the direction of magnetic field lines?

  North to south
• Magnetic fields are created by moving charges.
• The magnetic force acts only on moving charges.
• What does the right-hand rule help determine for a current-carrying wire in a magnetic field?

  Force direction
• One weber is equal to the magnetic flux passing through 1 square meter when the magnetic field strength is 1 tesla.

  True
• What is the unit of magnetic flux?

  Weber
• What is a magnetic field?

  Region around a magnet
• Magnetic field lines indicate the direction that a small compass needle would align with.
• Magnetic field lines point from the north pole to the south pole.


  True
• A stationary charge creates a magnetic field around itself.

  False
• What does your palm face in the right-hand rule for magnetic force on a moving charge?

  Direction of magnetic force
• What is one factor that determines the magnetic force on a current-carrying wire placed in a magnetic field?

  Current (I)
• Match the variables with their units in the magnetic force formula:

  F ↔️ Newtons (N)

  B ↔️ Teslas (T)

  I ↔️ Amperes (A)

  L ↔️ Meters (m)
• What is magnetic flux defined as?

  Total magnetic field through area
• What is the formula for calculating magnetic flux?

  Φ = B × A
• Exposure to strong magnetic fields in medical physics can pose risks.


  True
• What is a magnetic field represented by?

  Magnetic field lines
• The direction of a magnetic field is determined by magnetic field lines, which point from the north pole to the south
• The right-hand rule is used to determine the direction of the magnetic field created by a moving positive charge.

  True
• Magnetic field lines point from the north pole to the south
• Magnetic field lines point from the north pole to the south pole.
• The strength of a magnetic field is proportional to its line density.
• The direction of a magnetic field around a moving charge is circular.

  True
• What type of charges does an electric force act on?

  Stationary and moving
• Magnetic flux is defined as the product of magnetic field strength and the area perpendicular to the field.