Flemings right hand rule is used to find the
Flemings right hand rule is used to find the
Right Answer is:
Direction of emf
SOLUTION
Fleming’s right-hand rule is specifically used to determine the direction of induced current(emf) in generator’s windings conductor moving within a magnetic field.
Fleming’s right-hand rule:
- Thumb: Represents the direction of the conductor’s motion relative to the magnetic field.
- Index finger: Points in the direction of the magnetic field.
- Middle finger: Points in the direction of the induced current.
So, by knowing the direction of the motion and the magnetic field, you can use this rule to determine the direction of the current flowing in the conductor.
Important note:
Although closely related, it’s important to differentiate between induced current and induced EMF.
- Induced EMF: Voltage generated in a conductor due to a changing magnetic field (Fleming’s right-hand rule applies to this).
- Induced current: The actual flow of electrons in the conductor due to the induced EMF. The direction of the induced current is always opposite to the direction of the induced EMF.
Therefore, while Fleming’s right-hand rule directly gives you the direction of the induced EMF, you can use this knowledge to understand the direction of the induced current by reversing it.
Finger | Right-hand rule | Left-hand rule |
Thumb | The direction of motion of conductor (input) | The direction of the conductor (output) |
Forefinger | Magnetic field | Magnetic field |
Middle finger | The direction of induced emf (output) | The direction of current (input) |