formulas igcse Flashcards
FORM: Power (2 types)
P= voltage^2 / resistance . P= work done/time. (watts(w))
FORM: weight
Weight= Mass X Gravitational f
FORM: Workdone
workdone= Force X Distance (J)
FORM: frequency of light wave
speed of light / wave length
Form: charge
charge= current x time (Coulombos)
2 FORM: energy
voltage X current X time (J) (E= V x I x T)
E = Q × V Q = charge in coulombs (C)
2 FORM: current
power / voltage. current=charge x time. (amps)
FORM: kinetic energy
(1/2) X mass X velocity^2
FORM:acceleration
=Δv/Δt (m/s^2) Δ= difference
FORM: moment
force × perpendicular distance from the pivot
FORM: force
force= acceleration X mass
state hooke’s law
force needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance
FORM: voltage
voltage= resistance X current
FROM: (Hooke’s law)
Force = constant x extension
form: density
mass / volume
form: Potential Energy
Potential Energy = mass x gravity x height (GPE = mgΔh)
form: pressure
force / area. (Pascals (Pa)
form: potential difference (Voltage) =
Work done /Charge
form : e.m.f.
= Energy supplied /Charge
form : Efficiency
= useful Energy(or power) output/
Energy(or power) input. X 100%
form: Frequency wave
number of oscillations /
Time taken
form : Refractive index n
= sin i/
sin r
form : transformers coil
Number of turns in primary coil /
Number of turns in secondary coil= Voltage in primary coil/ Voltage in secondary coil
