Printable worksheet ยท 3 of 4
Higher transmission voltage can reduce heating loss - Paper 3
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
Read before answering
Ideal transformer: alternating primary potential difference 220 V, primary turns 1100, secondary turns 100. Separately, transmit 440 W through wires of total resistance 2 ohms, comparing 100 V with 200 V under an ideal fixed-delivered-power model. These are paper models only; grid and mains equipment are dangerous.
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