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Problem 1. The primary winding of a transformer with a toroidal core is supplied with a square wave voltage with amplitude of +50 V and a frequency of 100 kHz. Assuming a uniform flux density in the core, calculate the minimum number of primary winding turns required to keep the peak flux density in the core below 0.15 Wb/m'* if the core cross sectional area is 0635 cm?. Plot the voltage and flux density waveforms in steady state as function of time. Problem 2. For the transformer in Problem 1. Calculate the magnetizing inductance L,, if the mean path length equals 3.15 cm and the relative permeability u, = 2500