AC (alternating current) and DC (direct current) are two types of electrical currents. The main difference between them is the direction of the flow of electrons. In AC, the direction of the current changes periodically, while in DC, the direction remains constant. AC is typically used for long-distance power transmission, while DC is commonly used in electronic devices.
Voltage and current are two important electrical quantities. Voltage is the potential difference between two points in an electrical circuit, while current is the rate of flow of electric charge. In simpler terms, voltage can be thought of as the force that pushes the electrons, while current is the actual flow of electrons. Voltage is measured in volts (V) and current is measured in amperes (A).
A circuit breaker is a safety device that is used to protect electrical circuits from damage caused by overloading or short circuits. When a circuit is overloaded, the circuit breaker will automatically trip and cut off the flow of electricity, preventing potential fires or damage to appliances. It is an essential component in any electrical system to ensure safety.
A resistor and a capacitor are two passive electrical components that have different functions. A resistor is used to resist the flow of current in a circuit, while a capacitor is used to store electrical energy. Resistors are typically used to control the amount of current or voltage in a circuit, while capacitors are commonly used in timing circuits or as filters to smooth out voltage fluctuations.
Electricity flows through a circuit in a closed loop, from the power source to the load and back to the source. The power source, which can be a battery or a power plant, creates a potential difference (voltage) that pushes the electrons through the circuit. The electrons then flow through the wires and components, such as resistors and capacitors, and eventually return to the power source to complete the loop.