Physics
Grade-10
Easy
Question
Who has stated that a magnetic field can exert a mechanical force on a current-carrying conductor?
- Oersted
- Fleming
- Einstein
- Ampere
Hint:
Fleming's left-hand rule is used to find the direction of the force acting on the current carrying conductor placed in a magnetic field.
The correct answer is: Ampere
- In 1821, Fleming discovered that: When a current-carrying conductor is placed in a magnetic field, a mechanical force is exerted on the conductor which can make the conductor move.
- Fleming's left-hand rule is used to find the direction of the force acting on the current carrying conductor placed in a magnetic field.
- In Fleming’s left-hand rule, when we keep the thumb, forefinger and middle finger mutually perpendicular to each other, the thumb represents the direction of force experienced by the conductor, the forefinger represents the direction of magnetic field and the middle finger represents the direction of current flowing through the conductor.
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