text: # How does a simple DC circuit work?
  
  ## How does a simple DC circuit work?
  
  A simple DC circuit consists of a current source (e.g. battery) and one or more “loads” (circuit elements). Each “load” absorbs electrical energy, converting it to some other form of energy, e.g. a light bulb emits heat and light energy, an electric motor performs mechanical work and emits heat.
  
  ### What are the three common components of a DC circuit?
  
  The resistor is the main component of the DC circuit. A simple DC circuit is shown in the figure below which contains a DC source (battery), a load lamp, a switch, connecting leads, and measuring instruments like ammeter and voltmeter.
  
  #### Can a parallel circuit be DC?
  
  When two or more electrical components are connected in a way that one end of each component is connected to a common point and the other end is connected to another common point, then the electrical components are said to be connected in parallel, and such an electrical DC circuit is referred as a parallel DC circuit.
  
  What is the formula of DC circuit?
  
  Equations
  
  Equation Symbols
  P = I Δ V P = I \Delta V P=IΔV P P P is power, I is current, and Δ V \Delta V ΔV is electric potential difference
  
  What are the rules for drawing circuit diagrams?
  
  Circuit diagrams Always try to make the wires straight lines. Do not be tempted to make them wiggly because the whole point is to make it easier to see what is connected to what. If you have to draw a circuit diagram: draw the circuit symbols first, then.
  
  ## What is common in a DC circuit?
  
  “Common” is a point of reference shared throughout a circuit, typically the node in reference to which every other node is described. In the case of a single-pole double-throw (SPDT) switch, common (also called the pole) is the terminal which the “normally open” and “normally closed” terminals switch to.
  
  ### How does a DC current flow?
  
  Direct current (DC) is an electric current that is uni-directional, so the flow of charge is always in the same direction. As opposed to alternating current, the direction and amperage of direct currents do not change.
  
  #### What is the common wire in a DC circuit?
  
  The black wire in DC is called NEGATIVE or COMMON. In the british system theBLK. is called neutral.
  
  What is the effective resistance of the DC circuit?
  
  The effective resistance is basically the resistance of that single edge. In the study of electrical circuits, one is interested in the behaviour of idealized electrical com- ponents in a circuit in terms of voltage (or potential difference) and current [13, p. 11].
  
  How does a DC Circuit work?
  
  A direct current (DC) electric circuit consists of a source of DC electricity—such as a battery—with a conducting wire going from one of the source terminals to a set of electric devices and then back to the other terminal, in a complete circuit. A DC circuit is necessary for DC electricity to exist.
  
  ## How to read a circuit diagram?
  
  In order to learn how to read a circuit diagram, it is necessary to learn what the schematic symbol of a component looks like. It is also necessary to understand how the components are connected together in the circuit.
  
  ### What is a direct current (DC) Circuit?
  
  A direct current (DC) electrical circuit consists of a source of DC electricity with a conducting wire going from one of the source terminals to a set of electrical devices and then back to the other terminal, in a complete circuit.
  
  #### What is a circlecircuit diagram?
  
  Circuit diagrams or schematic diagrams show electrical connections of wires or conductors by using a node as shown in the image below. A node is simply a filled circle or dot.
  
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