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 ▸Explain what the terminal velocity of an object is.
Does a negative acceleration always mean that the object is slowing down?
A musical instrument produces a sound wave with a frequency of 1000 Hz. The sound wave has a wavelength of 0.34 m in air. Calculate the speed of the sound wave in air.
Outline the structure of the alpha and beta particle and give their overall charge and a material which it cannot pass through.