top of page
Evan Toh
Oct 21, 20241 min read
When a thermistor is connected in series with a fixed resistor, how to explain the p.d. varies as resistance temperature changes?
When two components are connected in series, where one is a fixed resistor and the resistance of the other can vary (e.g. thermistor,...
22 views0 comments
Evan Toh
Jan 1, 20242 min read
2008PPp1q15,2017PPp1q15– Pressure constant, rate of collision decreases
When gas in piston and heated but pressure remains constant. It is easier to explain in terms of the average force acting on a unit area....
2 views0 comments
Evan Toh
Dec 31, 20231 min read
Which is better to cool the food? Copper or ice at 0oC - 2008SPP2Q6(b)
Other examples in our daily lives: In some supermarket, the seafood are placed outside of air-conditioned place. The seafood is kept cold...
7 views0 comments
Evan Toh
Dec 31, 20231 min read
PP2008Q11OR Thermistor in series with fixed resistor, explanation on pd and graph
As both the fixed resistor and the thermistor are connected in series, the sum of potential difference across them will be equal to the...
0 views0 comments
Evan Toh
Dec 31, 20231 min read
Determine the motion of the particles on transverse wave
Instead of imaging how the particles will move and guess their motion, there is a technique which can help you to determine that. In...
121 views0 comments
bottom of page