Self Test 1.      Complete the following sentences:   In a circuit with a capacitor, the _________________ leads the voltage by __________. In a circuit with an inductor, the current _______________ the voltage by __________. In a resistor the voltage and current are always ______ ___________________. In a series circuit, the current is ____  ______________ all the way round.   We can show the phase relations with a _____________________ diagram.     2.      Draw a phasor diagram to show the relationship between resistance, reactance of a capacitor, and the reactance of an inductor in a series RLC circuit.     3.      On your diagram, show the impedance vector.   4.      Write down an expression for the phase angle when XL > XC.   5.      Write down an expression for the phase angle when XC > XL.   6.      Write down an expression to find the impedance, Z.   7.      Define the impedance Z.   8.      Explain why a real inductor needs to be modelled with a series resistor   9.      In a series circuit, you have two inductors.  How would you model them into a series RLC circuit?   10.  In a series circuit, you have two capacitors.  How would you model them into a series RLC circuit?