what is ohm's law?

GCSE

Ohms law establishes a relationship between resistance, voltage and current, saying that V/I = R.

Related GCSE Questions

A car of mass 1000 kg is travelling at 15 m/s. The driver applies the brakes for 4 seconds, slowing the car to 5 m/s. What is the average power output of the brakes over the 4 seconds? Assume there are no other forces acting on the car.
What is the difference between displacement and distance?
A reflex occurs the iris of the human eye in response to changes in light levels - describe how these changes occur, referring to the changes in light level in your answer.
Sketch a graoh of current against potential difference for a filament lamp and explain its shape.
How do you calculate efficiency?

Levels