quiz dump.docx

** What is required for electric current to flow through a circuit?** - **A complete, unbroken path from the power source through the circuit and back.** ** What controls the flow of current in a simple circuit?** - **A switch controls the flow of current.** ** In a simple circuit, wh...

** What is required for electric current to flow through a circuit?** - **A complete, unbroken path from the power source through the circuit and back.** ** What controls the flow of current in a simple circuit?** - **A switch controls the flow of current.** ** In a simple circuit, what happens when the switch is open?** - **The circuit is broken, and the current stops flowing.** ** What is transferred as electric current travels through a circuit?** - **Energy is transferred from the power source to components like lamps or motors.** ** Which symbol represents a battery in a circuit diagram?** - **A battery is represented by a set of long and short parallel lines (a pair of parallel lines, one longer and one shorter).** ** In a circuit, in which direction does current flow?** - **Current flows from the positive terminal to the negative terminal of the power source.** ** What is the unit of measurement for electric current?** - **The unit of measurement for electric current is the ampere (A).** ** What instrument is used to measure voltage?** - **A voltmeter is used to measure voltage.** ** What is the process called by which electricity generators convert energy from various sources into electrical power?** - **The process is called electromagnetic induction.** ** Name a common renewable source of energy used to generate electricity.** - **Wind, solar, or hydropower are common renewable sources.** ** Which component of the electricity grid lowers the voltage for safe distribution?** - **A substation lowers the voltage for safe distribution.** ** During which stage of electricity distribution is high-voltage electricity carried over long distances?** - **During the transmission stage.** ** List a common application of electricity.** - **Powering homes, offices, and factories; operating machinery; charging electric vehicles; or supporting communication systems.** ** What factor does NOT influence electricity cost?** - **The colour of the appliances used does not influence electricity cost.** ** What does resistance measure in an electrical circuit?** - **Resistance measures how much a material opposes the flow of electric current.** ** What is the formula that represents Ohm\'s Law?** - **The formula is V = I × R, where V is voltage, I is current, and R is resistance.** ** In what unit is electric power measured?** - **Electric power is measured in watts (W).** ** What is the difference between AC and DC power?** - **AC (Alternating Current) power alternates direction periodically, while DC (Direct Current) power flows in one direction only.** ** Which instrument is used to measure the current flow in a circuit?** - **An ammeter is used to measure current flow.** ** Which test instrument can measure current, voltage, and resistance?** - **A multimeter can measure current, voltage, and resistance.**