Explain how the resistance of a filament lamp changes as the potential difference across it increase
As the potential difference across the filament lamp increases the current across the lamp also increases due to Ohm's law.The increase in current flow also causes the lamp to heat up which causes the resistance of the lamp to also increase.
FB
Related Physics GCSE answers
All answers ▸What is the Doppler effect?
On a day with no wind, a large object is dropped from a tall building. The object experiences air resistance during its fall to the ground. State and explain, in terms of the forces acting, how the acceleration of the object varies during its fall.
What is the mass of an object travelling at 15 m/s with a kinetic energy of 100 J?
A car travelling at 14 m/s has to make an emergency stop so applies the brakes and it takes 1.5s to become stationary. What distance has the van travelled in that time?