Quantities
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Proportionality
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current and voltage of an Ohmic resistor
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direct (Ohm's law)
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resistance of an LDR and light intensity
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inverse
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capacitance and voltage of a capacitor storing a fixed magnitude of charge
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inverse
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charge and current
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inverse
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electrical energy transferred and time
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direct
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speed and time taken
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inverse
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height of drop and velocity of a dropped ball at surface of earth
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direct to the square
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force and acceleration
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direct (Newton's 1st law)
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moment of a force and the perpendicular distance from the pivot
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direct
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density and volume (constant mass)
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inverse
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upthrust and the weight of the displaced fluid
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direct
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upthrust and volume of a submerged object
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inverse
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kinetic energy and velocity
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direct to the square
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gravitational potential energy and mass of an object
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direct
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force working against friction and velocity of a moving vehicle with constant power
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inverse
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stretching force on a string or elastic band and the distance stretched
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direct
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the 'stress' on a string and its cross-sectional area
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inverse
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the 'stress' on a string and its diameter ('thickness')
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inverse to the square
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momentum and velocity of an object
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direct
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resistivity and length of a wire
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inverse
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frequency and time period
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inverse
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light intensity and distance from the light source
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inverse to the square (inverse-square law)
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intensity and amplitude of a wave
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direct to the square
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energy of a photon and its wavelength
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inverse
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momentum of a quantum particle and its wavelength
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inverse
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momentum of a quantum particle and its frequency
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direct
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volume and temperature of a gas at constant pressure
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direct
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recession speed of a galaxy and distance from earth
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direct
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radioactivity of a given mass of substance and its half life
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inverse
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