IGCSE Physics formulas


Physics formulas on grade 10 level in preparation for IGCSEs. (Some terms included)
Imani :D
Flashcards by Imani :D, updated more than 1 year ago
Imani :D
Created by Imani :D over 8 years ago

Resource summary

Question Answer
density mass / volume
average speed distance moved / time taken
What is velocity? the speed of something and its direction (vector)
average acceleration change in velocity / time taken
resultant force (force) mass X acceleration
weight mass X g
What is g in terms of Newtons g = 10N/kg
What is Newtons third law of motion If object A exerts a force on object B, then object B will exert an equal but opposite force on object A
momentum mass X velocity
change in momentum (impulse) resultant force X time
load spring constant X extension
pressure force / area
work done force X distance moved (in the direction of the force)
what is work done equal to? energy tranformed
gravitational potential energy mgh (weight X g X height)
kinetic energy
efficiency useful work done (useful energy output) / total energy input
power work done / time taken
useful power output force X speed
How many degrees Celcius is 0 K? -273 degrees
What is the wave equation? speed = frequency X wavelength
What is the refractive index? refractive index = speed of light in vacuum / speed of light in medium
charge current / time
potential difference voltage at the beginning of a circuit - voltage at the end of a circuit
resistance p.d across conductor (V) / current through conductor (A)
What is Ohms law? that current is proportional to the potential difference in a ciruit
How does one calculate the combined resistance in series circuits? R = R1+ R2
How does one calculate the combined resistance in parallel circuits? or combined resistance = resistance multiplied / resistance added
power energy transformed / time taken or power = p.d X current
energy transformed power X time taken or p.d X current X time taken
How can the ratio of the voltage and the number of turns on the input and output (primary and secondary) coils be described? output voltage / input voltage = turns on output coil / turns on input coil
How can the ratio of power in a transformer be described? (if no energy is lost) input voltage X input current = output voltage X output current or V1 X I1 = V2 X I2
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