The circuit’s power supply is formed from several cells, all with the same electromotive force (e.m.f.), and the cells are connected in parallel.
(a)[2]
Explain the meaning of ‘electromotive force’.
(b)[1]
State one benefit of using several cells in parallel instead of a single cell as the power supply.
(c(i))[3]
The temperature of the thermistor increases. Explain what happens to the reading on the voltmeter.
(c(ii))[2]
The e.m.f. of the power supply is $1.5\,\text{V}$. Calculate the reading on the voltmeter when the resistance of the thermistor is $8000\,\Omega$.
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