Explain Ohms Law

Ohms law establishes a relationship between resistance, voltage and current, saying that V/I = R. The traditional graph given for ohmic resistors is:An increasing line with gradient x starting at (0,0)

LL

Related Physics GCSE answers

All answers ▸

What is a critical angle and when does total internal reflection take place?


A student investigated how the resistance of a piece of nichrome wire varies box with length.Describe how the student would obtain the data needed for the investigation. Your answer should include a risk assessment for one hazard in the investigation.


a bat emits sound waves with a range of wavelengths. Some of the sound waves will be diffracted by the insect. Complete the following sentences to explain why. [2 marks] Diffraction is caused by the sound waves _______________________________________


if -3 + -4 is -7, is -3 x -4 =-12 (also negative)