1.  The minimal electrical circuit must contain three partsa source, a path and a: 
2.  The source of supply of an electrical circuit is: B.  where the energy comes from 
C.  the part of the circuit where the current does not flow 
D.  the section where the energy is consumed 

3.  The load of an electrical circuit is the part that: A.  supplies the energy for the circuit 
B.  conducts the current to the working device 
C.  converts electricity into some form of work 
D.  must always be connected a short circuit 

4.  An electrical circuit needs a conductor to: A.  act as the circuit load 
B.  provide the energy for the circuit 
C.  ensure that a short circuit cannot occur 
D.  carry the current to the load 

5.  Switches control current flow within a circuit. When a circuit is open: C.  shortcircuit current flow 
D.  the supply is connected to the load 

6.  Look at the following diagram: With reference to the simple circuit shown above, the element marked ‘3’ is the: 
7.  For ammeters to read the current in a circuit, the ammeter must be connected so that: A.  it is in parallel with the circuit 
B.  the voltage will flow around the ammeter 
C.  the current passes through the ammeter 
D.  it will read the load voltage 

8.  In a seriesconnected circuit, there is only one path and the current from the source: A.  flows around some components 
B.  only flows through the source 
C.  does not flow through the loads 
D.  flows through each component 

9.  Look at the following diagram: The above drawing shows a: 
10.  In a parallelconnected circuit: A.  there is only one current path 
B.  there is one path for each load 
C.  the loads are connected in series 
D.  a supply source is not required 

11.  Look at the following diagram: In the diagram, the loads are connected: A.  in a series configuration 
B.  in a series/parallel combination 
C.  in a parallel configuration 
D.  so that the current flows through one after another 

12.  Compound circuits are made up of: A.  compound supply sources only 
B.  load units with series loads only 
C.  only those parts that are in parallel with the supply 
D.  both series and parallel parts 

13.  Look at the following diagram: In the above diagram, the lamps are connected as a: 
14.  Look at the following diagram: The above diagram represents a: 
15.  When resistors are connected together, they can be replaced by a single resistor with the same overall resistance as the set of resistors. A resistor that has the same value as a group of combined resistors is called: C.  an equivalent resistance 
D.  an elaborate resistance 

16.  Loops are an engineering title for what electricians would normally refer to as: 
17.  Look at the following diagram: The number of current loops in the above circuit is: 
18.  The common electrical abbreviation for the potential difference between two points is: 
19.  Look at the following diagram: With reference to the memory jogger called ‘Ohm’s Triangle’ shown above, if the value of the current in a given circuit is required it can be determined by: A.  multiplying the voltage by the resistance 
B.  multiplying the power by the voltage 
C.  dividing the voltage by the resistance 
D.  dividing the power by the resistance 

20.  Look at the following diagram: This diagram shows the power wheel which can be used as a memory jogger when solving simple circuit analysis problems. This wheel is derived from: A.  Ohm’s Law and the current divider rule 
B.  Kirchhoff’s Law and the power equation 
C.  Kirchhoff’s law and Ohm’s Law 
D.  Ohm’s Law and the power equation 

21.  Kirchhoff’s Voltage Law states that in any given circuit, the algebraic sum of the applied EMFs is equal to the: A.  algebraic sum of the voltage drops 
B.  algebraic difference between any two voltage drops 
C.  value of the algebraic applied current 
D.  sum of the algebraic resistance values 

22.  The following formula can be used to determine the total resistance in a series circuit. In the formula the symbol R_{1} stands for the: A.  total circuit resistance 
B.  resistance of resistor R_{1} 
C.  current through resistor R_{1} 
D.  voltage drop across resistor R1 

23.  Look at the following diagram: The equivalent resistance to replace the three resistors in the series circuit shown above is: 
24.  The equivalent resistance of a number of series resistors is always: A.  less than any individual resistance 
B.  equal to the value of any individual resistance 
C.  equal to the product of the individual resistances 
D.  greater than any individual resistance 

25.  When a number of components are in series, the current must pass through each component to return to the source. Therefore, should any one component, conductor or joint become an open circuit, the current: A.  cannot flow and the whole circuit will fail 
B.  will flow through all components but the faulty one 
C.  will only flow through the open circuited joint 
D.  will flow through the faulty component but not the joint 

26.  The voltage across any number of components connected in parallel will: A.  be greater than the supply voltage 
C.  equal to the sum, of the voltages across each component 
D.  always be equal to 230 V 

27.  Kirchhoff’s Current Law states that the sum of the currents entering a junction: A.  is greater than the sum of the currents leaving that junction 
B.  is less than the sum of the currents leaving that junction 
C.  equals the sum of the currents leaving that junction 
D.  equals the supply voltage around the junction 

28.  The following formula can be used to determine the equivalent resistance of a number of resistors in parallel: In the formula the symbol ‘R_{Total}‘ stands for the: A.  total resistance of R_{1} plus R_{2} only 
B.  total supply voltage for the circuit 
C.  total real current flowing through each resistor 
D.  equivalent circuit resistance 

29.  Look at the following diagram: The equivalent resistance to replace the three resistors in the parallel circuit shown above is: 
30.  The equivalent resistance of a number of parallel resistors is always: A.  greater than any individual resistance 
B.  smaller than any individual resistance 
C.  equal than any individual resistance 
D.  equal to the sum of the individual resistance 

31.  In a parallel circuit, if one branch becomes open circuit, the: A.  total current is increased 
B.  total current falls to zero 
C.  other branches are not affected 
D.  other branches will draw more current 

32.  When identifying sections of a compound circuit, components that are joined by a single conductor with no other connections, are connected in: 
33.  When simplifying compound circuits by the equivalent resistance method, wherever two or more resistors are found to be in series, they may be simplified by: B.  subtracted from each other 

34.  One method that can be used to find the total power in a circuit is to find the individual power used in every component and then: A.  apply Ohms Law to find the total power 
B.  add the values to find the total power 
C.  apply Kirchhoff’s Law to find the total power 
D.  add the values of voltage and current to find the total power 

35.  Look at the following diagram: The diagram shown above has a battery of four 1.5 volt cells, connected via a switch to a 3 watt lamp. When the switch is closed, the current drawn from the battery will be: 
36.  Look at the following diagram: The reading on the ammeter in the above circuit will be: 
37.  Look at the following diagram: The reading on the voltmeter in the above circuit will be: 
38.  Parallel circuits have: A.  no voltage drops across the resistances 
B.  the same voltage across all branches in the circuit 
C.  the same current through all branches in the circuit 
D.  no current through the load resistances 

39.  Look at the following diagram: The equivalent resistance of the above circuit is: 
40.  Look at the following diagram: With reference to the above circuit, the reading on the ammeter will be: 
41.  Look at the following diagram: With reference to the above circuit, the current through resistor ‘R1’ will be: 
42.  Look at the following diagram: With reference to the above circuit, the reading on the ammeter will be: 
43.  Look at the following diagram: With reference to the above circuit, the reading on the voltmeter will be: 