Advanced level 2025 South West mock Physics 2 mark guide
Advanced level 2025 South West mock Physics 2 mark guide
[01 mark each for any correct points amongst A to E].
A: liquid in glass thermometer.
B: it is portable or easy to read, etc.
C: constant volume gas thermometer.
D: change in pressure of an ideal gas with temperature at constant volume.
E: change in electrical resistance of platinum with temperature.
[4].
a)
i. A potentiometer is more accurate than a voltmeter as its measurements are taken when there is no
current hence there are no errors caused by internal resistance of the cell.
ii. A voltmeter is faster in operation than a potentiometer hence it can be used to follow rapidly
changing temperatures, voltmeter is also more portable than a potentiometer (any one given)
