Suppose the voltage source for a series RL-circuit were given as V0sin(ωt) instead of V0cos(ωt). Part (a)  Enter an expression for the current amplitude in terms of V0, ω, R, and L.  Part (b)  Calculate the current amplitude, in milliamperes, when V0 = 1.1 V, ω = 31 rad/s, R = 21 Ω, and L = 0.52 H.  Part (c)  Enter an expression for the tangent of the phase constant in terms of ω, R, and L.  Part (d)  Calculate the phase constant, in radians in the range -π/2 ≤ φ ≤ π/2, for the circuit parameter values given in part (b).

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