Will only flow through the open circuited joint Will flow through all components but the faulty one Therefore, should any one component, conductor or joint become an open circuit, the current:Ĭannot flow and the whole circuit will fail When a number of components are in series, the current must pass through each component to return to the source. The equivalent resistance of a number of series resistors is always:Įqual to the value of any individual resistanceĮqual to the product of the individual resistances Look at the following diagram: The equivalent resistance to replace the three resistors in the series circuit shown above is: In the formula the symbol R 1 stands for the: The following formula can be used to determine the total resistance in a series circuit. Kirchhoff’s Voltage Law states that in any given circuit, the algebraic sum of the applied EMFs is equal to the:Īlgebraic difference between any two voltage drops 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. Multiplying the voltage by the resistance 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:
The common electrical abbreviation for the potential difference between two points is: Look at the following diagram: The number of current loops in the above circuit is: Loops are an engineering title for what electricians would normally refer to as: A resistor that has the same value as a group of combined resistors is called: When resistors are connected together, they can be replaced by a single resistor with the same overall resistance as the set of resistors. Look at the following diagram: The above diagram represents a: Look at the following diagram: In the above diagram, the lamps are connected as a: Only those parts that are in parallel with the supply
So that the current flows through one after another Look at the following diagram: In the diagram, the loads are connected: Look at the following diagram: The above drawing shows a: In a series-connected circuit, there is only one path and the current from the source: Look at the following diagram: With reference to the simple circuit shown above, the element marked ‘3’ is the:įor ammeters to read the current in a circuit, the ammeter must be connected so that: Switches control current flow within a circuit. The load of an electrical circuit is the part that:Ĭonducts the current to the working deviceĬonverts electricity into some form of workĪn electrical circuit needs a conductor to:
The part of the circuit where the current does not flow The source of supply of an electrical circuit is:
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