Laws for A-Level physics - AQA

the junction rule: The sum of all currents entering a junction must equal the sum of all currents leaving the junction.

the loop rule: The algebraic sum of changes in potential around any closed circuit path (loop) must be zero. emf gained in cell = voltage lost to components

the size of the induced e.m.f. is proportional to the rate of change of flux linkage.

the direction of the induced emf opposes the change that caused it.

objects moving at a constant speed/veloicty will nto change this unless acted on by a net oustide force

F=ma

Every force has an equal and opposite recation force

Force is proportional to extension in a spring while within the limit of proportionality. straight line through origin.

the volume of gas increases as the temperature increases.

the volume of gas increases as the pressure decreases.

Pressure and temperature are directly proportional

In a single slit experiment, the fringes are not equally spaced and aren't of equal widths—the central maximum is the widest, the secondary maxima grow narrower and narrower outward, and the minima grow wider and wider outward.

In a double slit interference pattern, the fringes are equally spaced and of equal widths.

With a diffraction grating (lots of slits), the fringes are highly focused, with small widths and unequal spacing.

End of straight line section

when it is unloaded, will not return to original length

the name for the resultant force that cause circular motion

Constant throughout circuit

split across branches

Split across components

Same in each branch