12.5 Magnetic Force on a Current-Carrying Wire

• Magnetic field lines form closed loops

  True
• The magnetic force on a current-carrying wire is parallel to the magnetic field

  False
• What is a magnetic field?

  Region with magnetic force
• What creates a magnetic field?

  Moving electric charges
• What does the variable 'I' represent in the magnetic force formula?

  Current in the wire
• What is the equation for calculating the magnetic force on a current-carrying wire in a magnetic field?

  $F =$$BIL\sin\theta$
• The magnetic force on a current-carrying wire is zero when the angle θ is 0° or 180°.

  True
• The magnetic force is always perpendicular to both the current and the magnetic field
• What generates a magnetic field?

  Moving electric charges
• Magnetic fields can be generated by changing electric fields.


  True
• Match the variable in the magnetic force equation with its definition and units:

  F ↔️ Magnetic force on the wire (N)

  B ↔️ Magnetic field strength (T)

  I ↔️ Current in the wire (A)

  L ↔️ Length of the wire in the field (m)

  θ ↔️ Angle between wire and field (rad)
• What is the equation used to calculate the magnetic force on a current-carrying wire in a magnetic field?

  $F =$$BIL\sin\theta$
• The magnetic force on a current-carrying wire is at its maximum when the angle between the wire and the magnetic field is 90 degrees.


  True
• The magnetic force on a current-carrying wire increases as the magnetic field strength becomes stronger
• In the example problem, the magnetic force on the wire is calculated using the equation $F =$$BIL\sin\theta$, and the final force is found to be 0.2 N.
• The strength of a magnetic field is measured in teslas
• The magnitude of the magnetic force on a current-carrying wire is given by $F =$$BIL\sin\theta$, where θ is the angle between the wire and the magnetic field
• The magnetic force is maximum when the angle θ is 90°


  True
• The maximum magnetic force occurs when the angle θ is equal to 90°
• Steps for applying the right-hand rule to determine the direction of magnetic force:

  1️⃣ Align your fingers along the direction of the current (I).

  2️⃣ Curve your fingers towards the direction of the magnetic field (B).

  3️⃣ Your thumb will point in the direction of the magnetic force (F).
• Match the property of a magnetic field with its description:

  Direction ↔️ Forms closed loops

  Strength ↔️ Measured in teslas
• How is the direction of a magnetic field represented?

  Magnetic field lines
• What role does the wire play in a current-carrying wire system?

  Provides the path for current
• Under what conditions is the magnetic force on a current-carrying wire zero?

  θ = 0° or 180°
• Match the variable in the magnetic force equation with its definition and units:

  B ↔️ Magnetic field strength (Teslas)

  I ↔️ Current (Amperes)

  L ↔️ Length of wire in field (Meters)

  θ ↔️ Angle between wire and field (Radians)
• Steps to apply the right-hand rule for determining the direction of the magnetic force on a current-carrying wire:

  1️⃣ Align fingers with the direction of the current (I)

  2️⃣ Curve fingers towards the direction of the magnetic field (B)

  3️⃣ Thumb points in the direction of the magnetic force (F)
• Understanding the factors affecting magnetic force allows predictions about the behavior of current-carrying wires in magnetic fields.


  True
• Match the concept with its description:

  Current-carrying wire ↔️ Wire with electric current

  Magnetic field ↔️ Region with magnetic force
• Match the variable in the magnetic force equation with its definition and units:

  F ↔️ Magnetic force on the wire (N)

  B ↔️ Magnetic field strength (T)

  I ↔️ Current in the wire (A)

  L ↔️ Length of the wire in the field (m)
• What is the right-hand rule used to determine?

  Direction of magnetic force
• A magnetic field is a region of space where a magnetic force can be detected.

  True
• What formula describes the magnetic force on a current-carrying wire in a magnetic field?

  $F =$$BIL\sin\theta$
• A current-carrying wire has charged particles moving along its length
• The maximum magnetic force occurs when the angle θ is equal to 90°
• In the magnetic force equation, the variable 'F' represents the magnetic force
• The magnetic force on a current-carrying wire is always perpendicular to both the current and the magnetic field
• When is the magnetic force on a current-carrying wire zero?

  θ = 0° or 180°