Unit 202 formative knowledge check

What is the unit of magnetic flux?

• Tesla

• Weber

• Gauss

• Ohm

In a series circuit, how does the total resistance change when resistors are added?

• Increases

• Decreases

• Remains the same

• Depends on the resistor values

What is the primary purpose of a transformer in an electrical transmission system?

• Increase current

• Decrease voltage

• Increase voltage

• Decrease current

What is the standard voltage level for residential electricity distribution in the UK?

• 120V

• 230V

• 240V

• 480V

How does adding resistors in parallel affect the total resistance?

• Increases

• Decreases

• Remains the same

• Depends on the resistor values

Which component is responsible for regulating voltage at the consumer end of the power distribution system?

• Circuit breaker

• Transformer

• Voltage regulator

• Capacitor

What is the right-hand rule used for in electromagnetism?

• Determine the direction of magnetic field due to a current

• Calculate electric potential

• Assess resistivity

• Analyze power factor

What happens to the total resistance in a parallel circuit if one resistor fails (shorts)?

• Increases

• Decreases

• Remains the same

• Depends on the resistor values

Which energy resource is associated with tidal power plants?

• Solar

• Wind

• Hydropower

• Geothermal

What is the primary advantage of using alternating current (AC) for long-distance power transmission?

• Lower energy losses

• Higher voltage levels

• Safer for consumers

• Easier to generate