Direction of Magnetic Field Assignment Help

Assignment Help: >> Magnetic Effect of Current >> Direction of Magnetic Field

The direction of magnetic field is calculated with the help of the following simple laws :

(1) Maxwell's cork screw rule

According to this rule, if we imagine a right handed screw placed along the current carrying linear conductor, be moved such that the screw rotate in the direction of current flow, then the direction of rotation of the thumb gives the direction of magnetic lines of force.

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(2) Right hand thumb rule

According to this rule if a current carrying conductor is held in the right hand such that the thumb of the hand represents the direction of current flow, then the direction of folding fingers will represent the direction of magnetic lines of force.

 

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(3) Right hand thumb rule of circular currents

According to this rule if the direction of current in circular conducting coil is in the direction of folding fingers of right hand, then the direction of magnetic field will be in the direction of stretched thumb.


 

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(4) Right hand palm rule

If we stretch our right hand such that fingers point towards the point. At which magnetic field is required while thumb is in the direction of current then normal to the palm will show the direction of magnetic field.


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