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Difficulty: EasyMagnetic Force and Electromagnetism

Match each electromagnetic rule or law on the left with its corresponding physical application or phenomenon on the right.

  • Fleming's left-hand ruleDetermining the direction of force on a current-carrying conductor in a magnetic field
  • Right-hand grip ruleDetermining the direction of the magnetic field around a straight current-carrying wire
  • Lenz's lawDetermining the direction of an induced current in a conductor

Answer

Fleming's left-hand rule pairs with determining the direction of force on a current-carrying conductor; Right-hand grip rule pairs with determining the direction of magnetic field around a straight wire; Lenz's law pairs with determining the direction of an induced current.
Each rule specifically identifies a vector direction in electromagnetism: Fleming's left-hand rule identifies the force direction on a current-carrying conductor, the Right-hand grip rule gives the magnetic field pattern surrounding a current-carrying wire, and Lenz's law gives the direction of an induced current.

Step-by-Step Solution

1
Identify the primary purpose of Fleming's left-hand rule
It relates magnetic field, current, and motion/force on a current-carrying conductor.
The thumb points to force, index finger to magnetic field, and middle finger to current.
2
Identify the primary purpose of the Right-hand grip rule
It determines the magnetic field direction around a straight wire carrying current.
Grasping the conductor with the thumb pointing in current direction causes the curled fingers to point in the field direction.
3
Identify the primary purpose of Lenz's law
It gives the polarity and direction of induced electromagnetic effects.
Lenz's law ensures conservation of energy by opposing the initial flux change.

Key Concept

Electromagnetic rules and their physical applications
Estimated Time:45s
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Topics

Magnetic Force and Electromagnetism

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