Physics · Oct / Nov 2020 · Paper 42 · Question 4
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Fig. 4.1 shows a thermometer. ice cubes wire of material A wire of material A wire of material B water at 0 °C water at 100 °C V Fig. 4.1 The voltmeter reading is 5.4 mV.
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4(a)[1]
thermocouple
4(b)[2]
(∆T =) {1.7 / 5.4} × 100
(T = 31 + 20 =) 51°C
4(c)[1]
any application involving high(er) / low(er) temperatures OR rapidly changing temperatures OR on vibrating machinery OR remote sensing OR data logging OR small areas / masses
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