What is DC theory?

What is DC theory?

When a constant emf is applied across a network of conducting components there will be a short period during which the current will increase from zero to a steady value. The resultant steady current is referred to as a direct current and the theory of such currents is referred to as dc theory or dc network theory.

What are three types of DC circuits?

The DC electric circuit is mainly classified into three groups. They are the series DC circuit, parallel DC circuit, and series and parallel DC circuit.

When solving a DC series circuit with the power wheel What is the first step?

First step is to sum the resistances, which then gives a total resistance of 140Ω. The source voltage is then divided by the total resistance.

What is direct current circuit theory?

Note that electrical current can be either positive in value or negative in value depending upon its direction of flow around the circuit. Current that flows in a single direction is called Direct Current, or D.C. and current that alternates back and forth through the circuit is known as Alternating Current, or A.C..

What does DC power stand for?

direct current
DC stands for ‘direct current’ which means the current only flows in one direction. Batteries and electronic devices like TVs, computers and DVD players use DC electricity – once an AC current enters a device, it’s converted to DC. A typical battery supplies around 1.5 volts of DC.

How many types of DC are there?

Types of DC Motors. There are 3 main types of DC motor that are available:- Series, Shunt and Compound. These terms relate to the type of connection of the field windings with respect to the armature circuit.

What is basic DC circuit?

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.

How do you solve DC voltage?

Through Ohm’s law, you can calculate the voltage (V), current (I) and resistance (R) of a DC circuit. From that you can also calculate the power at any point in the circuit. Follow Ohm’s law: Voltage (V) = Current (I) times Resistance (R).

What are the steps in making a series circuit?


  1. Examine and identify each component.
  2. Practice attaching the leads to each other.
  3. With the switch in the open (off) position, place components on the template and attach the wires.
  4. Observe that the circuit looks like a circle.
  5. Close the switch and listen for the sound of the motor.

What does DC mean in electrical terms?

The abbreviation “DC” stands for direct current. The polarity of the electric charge does not switch back and forth. This is why one end of a battery is positive, and the other end is negative. Current flows from the negative end of the battery, through the device being operated and back to the battery at the positive end.

What is DC circuit theory?

DC Circuit Theory The fundamental relationship between voltage, current and resistance in an electrical or electronic circuit is called Ohm’s Law. All materials are made up from atoms, and all atoms consist of protons, neutrons and electrons. Protons, have a positive electrical charge.

What are the basic principles of electrical theory?

Basic Principles of Electricity. Electricity, simply put, is the flow of electric current along a conductor. This electric current takes the form of free electrons that transfer from one atom to the next. Thus, the more free electrons a material has, the better it conducts.

What is electrical DC?

DC (direct current) is the unidirectional flow or movement of electric charge carriers (which are usually electrons). The intensity of the current can vary with time, but the general direction of movement stays the same at all times.