explain how the resistance of a filament lamp changes as the potential difference across it increases
as the potential difference increases, the current increases (ohm's law). this causes the temperature of the filament to increase, causing the resistance to increase.
SQ
Related Physics GCSE answers
All answers ▸What are the differences between microwaves and radio waves? How does this effect what we use them for?
What is the resistance (in Ohms) of two 20 Ohm resisters in parallel?
pressure = 2.3 × 10^5 Pa temperature= 200K. At a constant volume, when the temperature increases to 300K what is the pressure in Pa?
What is the difference between displacement and distance?