Right hand thumb rule class 10th
Imagine you are holding a current carrying straight conductor in your right
hand such that the thumb is pointing towards the direction of current. Then the
fingers wrapped around the conductor give the direction of magnetic field.
Magnetic Field Due to Current Through a Straight Conductor
It can be represented by concentric circles at every point on conductor.
Direction can be given by right hand thumb rule or compass.
Circles are closer near the conductor.
Magnetic field is directly propotional Strength of current
Magnetic Field Due to Current Through a Circular Loop
- It can be represented by concentric circle at every point.
- Circles become larger and larger as we move away.
- Every point on wire carrying current would give rise to magnetic field
appearing as straight line at centre of the loop.
- The direction of magnetic field inside the loop is same.
Factors affecting magnetic field of a circular current carrying conductor
- Magnetic field is directly propotional to the Current passing through the conductor
- * Magnetic field is directly propotional to the No. of turns in the coil
- Magnetic field is additive in nature i.e., magnetic field of one loop adds up to
magnetic field of another loop. This is because the current in each circular
turn has some direction.