Self Test

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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?

 

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