For the following questions answer them individually
A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = _:
The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?
The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits: