For the magnetic circuit shown, the air gap cross-sectional area is 0.004 m², the air gap length /=0.002 m, winding #1 has N₁=600 turns, winding #2 has N₂=200 turns, the core permeability is infinite, and leakage and fringing of the gap are neglected. a) Find the reluctance R of the magnetic circuit b) Find the current required to produce a net flux MI net N2 net-0.004 Wb in the airgap c) Find the self-inductances L₁ and L₂2 of windings #1 and #2 d) Find the mutual inductances L₁2 and L21 between windings #1 and #2.

Show a diagram of a simple electronic circuit and identify how the design prevents failures. Recommend a design change to improve reliability

As we know that opamps working on a dual power supply and both power supply should be in the same polarity. If the power supply is not similar in both the polarity the dc output will drift to either side depending on the higher amplitude of polarity and sometimes the case is like this offset nulling will become difficult to achieve So what is "offset nulling" ? Please explain

Please explain simply in detail, why Analog and Digital Electronics are important. Also please detail as many applications as possible and their relative usefullnesses.