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What is the rule relating to the direction of the field due to the current in a wire?
Wiki User
∙ 13y ago
The "Right Hand Rule"
Put your right hand under the wire with your thumb sticking out and in the direction of the flow of the current (note that it is opposite to the direction of the movement of the electrons!) and close your fist; the fingers of the right hand will curl around in the direction of the magnetic field.
Wiki User
∙ 13y ago
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What technique is used to determine the direction of the magnetic field around a current carrying conductor?
The right hand rule is a simple way to find out the direction of the field surrounding a current carrying conductor.Point your right thumb in the direction of the current in the wire (which flows from high to lower voltages) and curl the other fingers as if around the wire; the curled fingers define the direction of the magnetic field generated.CommentIt might be worth pointing out that the above answer applies for conventional flow, not electron flow.
What is formed around a wire when electricity flows through it?
Current through a conductor forms a magnetic field.The "Right Hand Rule" will tell you the direction: Point the thumb of your right hand along the conductor in the direction of current flow (from negative to positive) and the fingers of the right hand curl in the direction of the magnetic field force lines.
What shape is magnetic field produced when current is passed through the wire?
it is called the thumb rule right hand curled means flux line thumb means direction of current. there will be a reversal of flux.
When you're using the right-hand or generator rule your middle finger indicates the direction of what?
conventional current flow
How does the left hand rule apply alternating current generator?
your thumb will point to the diretion of the rotation...and you forefinger will point to the direction of the magnetic fluxAnswerFleming's Left-Hand Rule applies to motors when using 'conventional flow' and to generators when using 'electron flow'. So, assuming you are talking about electron flow, the thuMb indicates the direction of Motion of the conductor relative to the flux, the First finger indicates the direction of the magnetic Field (north to south), and the sEcond finger indicates the direction of the E.m.f. induced into the conductor. This applies whether the generator as an a.c. machine or a d.c. machine.
What is the Difference between left hand rule and right hand rule?
Fleming's right hand rule shows the direction of induced current flow when a conductor moves in a magnetic field. Fleming's left hand rule shows the direction of the thrust on a conductor carrying a current in a magnetic field.
What is the purpose of Fleming's right hand rule?
Fleming's right hand rule is used to determine the direction of the magnetic force on a current-carrying conductor in a magnetic field. By aligning the thumb with the direction of current flow, the forefinger with the direction of the magnetic field, the middle finger points in the direction of the magnetic force acting on the conductor.
A current-carrying wire is in a magnetic field with the direction of the current perpendicular to that of the field?
Fleming's left hand rule that explains Lorentz force would answer your queries
what rule is applied in case of dc motor?
You may be thinking of Fleming's Left-Hand Rule (for conventional current flow) or Fleming's Right-Hand Rule (for electron flow), devised by academic Sir Ambrose Fleming, as a aid for determining the direction of the resulting force acting on a current-carrying conductor within a magnetic field, when the direction of current and the direction of the magnetic field are known.
How rigt hand thumb rule is used in determining the direction of magnetic field around a conductor carrying current?
Curl the fingers of your right hand into the palm and extend the thumb. The thumb indicates the direction of the current, and the direction of the fingers indicates the direction of the magnetic field.
What is the direction of the magnetic field if the current is directed upward or downward?
The direction of the magnetic field is counterclockwise or clockwise. For a current flowing in a wire you can use the "left hand rule" If you take your left hand and have the thumb point in direction of electron flow in the wire, the fingers wrapped around the wire will show the direction of the magnetic field by the direction the fingers are pointed..
Why direction of rotation is not reversed when both field and armature terminals are reversed?
The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!
Why direction of rotation is not reversed when both field and armature terminal are reversed?
The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!
Why and when does a current carrying conductor kept in a magnetic field experiences a force list factor on which the direction of this force depend State the rule which may be used to determine the di?
Current carrying conductor will have magnetic lines around it. So when it is kept perpendicular to the magnetic field then the force would be maximum. The force depends on 1. magnitude of current 2. Magnetic field induction 3. Angle between the direction of current and magnetic field. Fleming's Left hand rule is used to find the direction of force acting on the rod
What is thumb rule related to magnetic field and current?
THUMB RULE:If we put our one thumb in the direction of magnetic flux passes through the conductor,then the movement of the fingures denotes the direction of current flow.
How do you decide the 'Direction of Rotation' of a magnetic field?
There is a convenient rule called the "right hand grip rule":If you grip your right hand around the electric conductor with your thumb pointing in the direction the current is flowing, the magnetic field rotates in the direction your remaining fingers are pointing.See related Wikipedia link for an illustration.
Which law gives the direction of magnetic field due to a current carrying conductor?
The right hand rule. If you were to place your right hand around the conductor, with the thumb pointing in the direction of current flow, your fingers which are wrapped around the conductor will point in the direction of magnetic flux. Said another way, if you are looking at the end of the conductor and current is flowing towards you, then magnetic flux will be counter-clockwise.
