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Some electrical machines work on the principle of
electromagnetic induction. For such events to occur, we need inductor due to which reactive power flows in the circuit. Since, this power is due to the energy storing elements in the circuit like inductor and capacitor. That is why, we need reactive power in a electric circuit.
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What is the role of reactive power in a power system?
To supply the reactive power demand of load and to regulate of output volage at the grid
What is the role of the battery in a circuit diagram?
The battery in a circuit diagram provides the electrical energy needed to power the components in the circuit. It acts as a source of voltage, creating a potential difference that drives the flow of electric current through the circuit.
Does an electric circuit what role would the power plants that provide electricity for homes be?
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What is the role of the electric field in the wires of an AC circuit?
The electric field in the wires of an AC circuit helps to push and pull the electric charges back and forth, allowing the flow of alternating current.
How is the earths electric field useful?
The Earth's electric field is useful in providing valuable information about the atmosphere's composition and dynamics. It also plays a key role in the global electric circuit, influencing weather patterns and climate. Additionally, it is important for technologies such as GPS that rely on accurately measuring electric fields for navigation.
What is the role of resistance in an electric circuit and how does it affect the flow of current?
Resistance in an electric circuit is the opposition to the flow of electric current. It is measured in ohms. Resistance affects the flow of current by reducing it, as higher resistance leads to lower current flow. This relationship is described by Ohm's Law, which states that current is inversely proportional to resistance in a circuit.
How do resistors work and what is their role in an electrical circuit?
Resistors are electronic components that limit the flow of electric current in a circuit. They work by converting electrical energy into heat. Their role in an electrical circuit is to control the amount of current flowing through different parts of the circuit, helping to regulate voltage levels and protect sensitive components from damage.
What role does switch play in an electric circuit?
a switch is used to isolate the a flow of current through a circuit , by breaking its connection, there is often a switch at the beginning of a circuit which would isolate the supply - voltage , from the load or " circuit " , in terms of higher - rated voltage circuits ( mains power) ; the switch performs a safety function where it provides a quick , safe and effective means of swathing off the circuit , providing a safety function - purpose , allowing the user to quickly remove power in the event of an emergency , for the switch to carry out its duty, it needs to have an air gap across its contacts contained within , rated so that at the designed/ rated voltage it maintains safety isolation / not allowing an electric arc / spark to jump across the gap .
What is power factor significance in calculating the AC power?
Power Factor is one of most significant parameter in calculating AC Power. As we know it is cosine of angle between AC Voltage and Current it comes in picture while calculating power in AC circuits Power In AC (P) = Voltage (V) X Current (V) X Power Factor Let us take an example of Power with Power factor and without power factor for same circuit. Let Us assume V = 125 Volts I = 1 Amp Power Factor = 1 Then P = 125X1X1= 125 Watts But for any circuit when Power factor is below 1, to execute same power, Circuit has to draw more current. for example P = 125X 1.25 X 0.8 = 125 Watts In first example power factor of the circuit was unity = 1 and in that condition current of the circuit was 1 amp whereas in second example power factor of the circuit is 0.8 due to which current of the circuit increases to 1.25 amp to execute the same power. Now due to increase in current of the circuit many factors are affected like heat loss, Conductor's specification , Class of insulation etc. Thus it can be concluded after going through above explanation that power factor play a significant role in AC power calculation as well as in actual practices.
What is the role of the battery symbol in a circuit diagram?
The battery symbol in a circuit diagram represents a power source that provides electrical energy to the circuit. It shows where the positive and negative terminals of the battery are connected in the circuit, indicating the flow of current from the positive terminal to the negative terminal.
What is the role of electrical energy in the flow of charges within a circuit?
Electrical energy plays a crucial role in the flow of charges within a circuit by providing the necessary force to push the charges through the circuit. It powers the movement of electrons, allowing them to flow from the power source, through the components, and back to complete the circuit. This flow of charges is what enables electrical devices to function and perform their intended tasks.
What is the role of an electron in a circuit?
In a circuit, electrons serve as the primary charge carriers that flow through conductors, enabling the transmission of electrical energy. When a voltage source is applied, it creates an electric field that causes electrons to move from the negative terminal toward the positive terminal. This movement of electrons constitutes an electric current, which powers devices and allows for the functioning of electronic components. Essentially, electrons facilitate the transfer of energy and information within the circuit.
