explain the relationship between resistance and voltage in a filament lamp

As voltage increases across the filament, the current also increases. The increase in current causes the temperature in the filament to rise. The increase in temperature causes the resistance within the filament to increase.
For more understanding:Higher voltages indicate that electrons have more energy causing them to move faster through the wire.Current is the rate of flow of electrons through the wire so the higher voltage causes a higher current.As electrons pass through the wire, they are deflected by the metal ions. this causes the metal ions to vibrate increasing their temperature. if the electrons move faster they hit the ions harder and cause them to vibrate more causing a higher temperature.When the electrons interact with the metal ions, they lose energy; this is 'resistance'The more the metal ions vibrate, the more collisions occur with the electrons causing a higher resistance

WP
Answered by William P. Physics tutor

12551 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

Why does increasing the temperature of a gas increase the pressure (when the volume is fixed)?


What is the difference between nuclear fission and fusion?


X-rays and gamma rays have different uses. Describe one use for X-rays and one use for gamma rays.


Describe the generator effect and its use within transformers (6 marks)


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning