A.2.12—Field forces Topic Practice
A.2.12—Field forces Topic Practice
Practise identifying which field causes a force and how the same interaction can be described differently in another reference frame.
How this is tested
- decide from the situation whether the force comes from an electric, gravitational, or magnetic field
- state the model assumption for a reference frame, then identify electric or magnetic force in that frame
- use field strength units such as N kg^-1 or m s^-2 when identifying a gravitational field force