The magnetic field at a point near the centre but outside a current carrying solenoid is zero. Explain why?

Explanation

When current is passed through a long straight solenoid, then each turn of the solenoid can be regarded as a circular loop carrying current and thus will be producting a magnetic field. The total magnetic field at a point is the vector sum of the magnetic fields due to currents through all the turns in the solenoid. At a point near the centre outside the solenoid, the magnetic fields due to neighbouring loops are equal in magnitude and opposite in direction. Hence the resultant magnetic field at a point near the centre outside the solenoid is zero.