**Direction of
Magnetic Field**

The direction of magnetic field is determined 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 rotated
such that the screw moves in the direction of flow of current, then the
direction of rotation of thumb gives the direction of magnetic lines of force.

**2) Right hand thumb rule: **According to this rule if a straight current
carrying conductor is held in the right hand represents the direction of
current flow, then the direction of folding fingers will represent the
direction of magnetic lines of force.

**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

**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.