1000000 - The prefix mega applies to:, joule - The SI unit of energy is the:, coulomb - The SI unit of electrical charge is the:, potential difference / voltage - The volt is a measure of:, 10-3 - The prefix milli applies to:, ρ=RA/L - Rearrange the formula R=ρL/A to find ρ, 19.16Ω - The resistance of a kettle element which takes 12A from a 230V mains supply is:, 24V - A 12Ω filament lamp was found to be taking a current of 2A at full brilliance. The voltage across the lamp under these conditions is:, is negatively charged - An electron:, PVC - Domestic wiring uses what kind of insulating material?, copper / brass - Good conductor materials include:, has few free electrons / may be made of plastic - A good insulator materials:, motor / lamp - Which of the following would be considered a load:, volt drop - If the voltage across a lamp is less than the supply. What causes this?, Ammeter - What kind of meter is connected in series?, Oil / Coal / Nuclear - Which of the following uses steam to generate electricity?, transformers only work with a.c. - Alternating current is used in the distribution and transmission of electricity because:, 230V single phase - A domestic setting is associated with:, 132kV - Transmission of electricity on the National Grid is associated with:, divert power from other sources - If any given power station fails, the National Grid will:,

Electrical Installation Science - Prefixes Match Up

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