Applying Ampere's circuital law, find magnetic field
due to toroidal solenoid.

Applying Ampere's circuital law, find magnetic field due to a straight long solenoid.

Define Ampere's circuital law.

State Ampere's circuital law.

Prove Ampere Circuital law.

What is a toroidal solenoid?

A long straight wire of circular cross-sectional of radius a carries a steady current I. The current is uniformly distributed across the cross-section. Apply Ampere's circuital law to calculate the magnetic field at a point r in the region r < a