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 ▸Describe a simple experiment to determine the speed of sound in air.
A block of mass 5kg is placed on the end of a meter rule on the end of a table. Calculate the moment that is produced by the block.
Describe the forces acting on a skydiver over time, from the moment she jumps out of the plane until hitting the ground and the effect this has on her velocity. What happens when she opens her parachute?
A 950 kg car accelerates from 0 to 33 m/s in 11 seconds. a) Calculate the acceleration of the car b) Calculate the force needed to produce this acceleration c) The car claims a top speed of 110 miles/hr. Explain why there must be a top speed for any car