OR
37.
To study the relationship between direction of current,magnetic field and motion (from
acting on a conductor) of a conductor
38.
Answers
Answer:
Objective:
To study the force on a current-carrying straight conductor in a magnetic field and to verify that the motion of the conductor is according to Fleming’s left-hand rule.
Theory:
A current carrying conductor placed in a magnetic field experiences a force. If the direction of the field and that of current are mutually perpendicular to each other, then the force acting on the conductor will be perpendicular to both and that can be determined using the Fleming’s left-hand rule. When current establishes in the conductor, it gets displaced which verifies the existence of a force on the conductor.
Fig. (1)
A current-carrying rod, AB, experiences a force perpendicular to its length and the magnetic field.
Fig. (2)
Hold the thumb and the first two fingers of your left hand mutually at right angles to each other as shown in Fig. (2). Then if the Forefinger points in the direction of the Field, and the second finger in the direction of the Current, the thumb will point in the direction of Force.
Given that,
The relationship between direction of current,magnetic field and motion of a conductor.
Fleming's left hand rule :
In the fleming's left hand rule, the thumb show the direction of motion on the conductor.
The fore finger shows the direction of magnetic field.
The middle finger shows the direction of current.
We need to show the relationship between direction of current, magnetic field and motion
According to the fleming's law,
When the direction of current and the direction of magnetic field are perpendicular to each other then the force will be perpendicular to the magnetic field and current respectively which is acting on the conductor.
Hence, This is the required solution.