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FAQs on AC Source Across R, L and C - GATE Notes & Videos for Electrical Engineering - Electrical Engineering (EE)

1. What is an AC source?
An AC source, or alternating current source, is a device that provides an electrical current that periodically changes direction. It is commonly used in electrical power systems and can be generated by power plants or generators.
2. How does an AC source work?
An AC source works by continuously changing the direction of the current flow. It does this by periodically reversing the polarity of the voltage applied to the circuit. This reversal of voltage causes the current to flow in one direction for a certain period of time and then reverse and flow in the opposite direction.
3. What is the difference between AC and DC sources?
The main difference between AC and DC sources is the direction of the current flow. AC sources provide current that periodically changes direction, while DC sources provide current that flows in only one direction. AC sources are commonly used for power transmission over long distances, while DC sources are often used for electronic devices and batteries.
4. What is resistance in an electrical circuit?
Resistance is the measure of how much a material or component opposes the flow of electrical current. It is represented by the symbol "R" and is measured in ohms. Resistance can be influenced by factors such as the material's conductivity, its length, and its cross-sectional area.
5. How does resistance affect an AC circuit?
Resistance affects an AC circuit by reducing the flow of current and converting electrical energy into heat. In an AC circuit, resistance can cause a voltage drop and lead to power losses. It can also affect the phase relationship between voltage and current, resulting in changes to the circuit's impedance and power factor.
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