1) Coal is an example of a a) Fossil fuel b) Nuclear energy source c) A renewable resource 2) The mains electricity supply in the UK a) 100V b) 130V c) 200V d) 230V e) 300V f) 330V 3) The frequency of the electricity supply in the UK a) 20Hz b) 30Hz c) 40Hz d) 50Hz e) 60Hz 4) The network of cables and transformers supplying electricity to consumers a) The national network b) The national grid c) The UK grid d) The UK network 5) Step up transformers a) Increase current b) Decrease current c) Increase voltage d) Decrease voltage 6) Step down transformers a) Increase current b) Decrease current c) Increase voltage d) Decrease voltage 7) Step up transformers a) Reduce energy loss b) Increase energy loss c) Have no impact on energy loss 8) Step down transformers a) Supply a dangerous voltage to homes b) Supply a safe voltage to homes 9) Voltage = a) Current x Resistance b) Current/Resistance c) Resistance/Current 10) Current is measured in a) Amps b) Volts c) Ohms 11) Voltage is measured in a) Amps b) Volts c) Ohms 12) Resistance is measured in a) Amps b) Volts c) Ohms

Physics retrieval

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?