Two coils are wound on a common magnetic core. The core has a mean path length of 40 cm, a cross-sectional area of 8 cm2, and a relative permeability of 3000. Coil 1 has 600 turns, and coil 2 has 200 turns. Assuming perfect coupling between the coils, what is the mutual inductance between them?

Arrange the following steps in the correct logical sequence when generating and determining the direction of a magnetic field around a current-carrying straight conductor: (M) Power supply is turned on (O) Flow of electric current in the wire (K) Formation of magnetic field (N) Application of Right-Hand Thumb Rule (L) Direction of magnetic field is determined

What is a solenoid?