quiz dump.docx

 What is a circuit diagram used for? - A circuit diagram is used to represent an electrical circuit using standard symbols to show how components are connected.  How would you describe voltage in a circuit? - Voltage is the force or pressure that pushes electric current through a ci...

 What is a circuit diagram used for? - A circuit diagram is used to represent an electrical circuit using standard symbols to show how components are connected.  How would you describe voltage in a circuit? - Voltage is the force or pressure that pushes electric current through a circuit.  What is the main function of the electricity grid? - The electricity grid delivers power from generation stations to consumers.  Name one advancement in electricity distribution that improves efficiency. - The development of smart grids.  What factors can cause the cost of electricity in Ireland to vary? - Usage, energy provider, energy sources, market prices, and seasonal changes.  What does the frequency of AC power indicate? - The frequency of AC power indicates how many times the current changes direction per second.  Explain the relationship between voltage, current, and resistance in an electrical circuit. - According to Ohm's Law, the voltage across a circuit is equal to the product of the current flowing through the circuit and its resistance.  Which formula is used to calculate power in a circuit? - The formula used is P = V × I, where P is power, V is voltage, and I is current.  How do you measure voltage across a component? - To measure voltage across a component, connect a voltmeter in parallel with the component.  What is the formula used to calculate the efficiency of an electric component? - Efficiency (%) = (Output power / Input power) × 100.