a. In the vector diagram, the current I = I₀ cosωt is defined as the projection on the x-axis of the vector I₀, which rotates around the point O with an angular velocity ω. How are the voltage drop vectors located on the same diagram when this current flows through the resistance R, the inductor L, and the capacitance capacitor C? What are the amplitudes of the voltage vectors?
b. Using a vector diagram, determine the voltage drop in the circuit of inductors L, resistance R, and capacitance capacitors C connected in series, and the phase shift between current and voltage in the circuit if the current in the circuit changes cosinusoidally: I = I₀ cosωt.