solution

a) Find the steady-state expression for the currents ig and i_L in the circuit in Fig. P10.51 when v_g = 400cos 400t V.

Â b) Find the coefficient of coupling.

c) Find the energy stored in the magnetically coupled coils at t = 1.25p Âµs and t = 2.5p Âµs.

d) Find the power delivered to the 375 â„¦ resistor.

e) If the 375 â„¦ resistor is replaced by a variable resistor R_L, what value of R_L will yield maximum average power transfer to R_L?

Â f) What is the maximum average power in (e)?

Â g) Assume the 375 â„¦ resistor is replaced by a variable impedance Z_L. What value of Z_L will result in maximum average power transfer to Z_L?

Â h) What is the maximum average power in (g)?

Solution:

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