JAMB Physics: Physical Quantities

Vocabulary flashcards covering fundamental and derived physical quantities, including symbols, dimensions, formulas, and SI units.

Length

A fundamental quantity represented by symbol $l$, with dimension $[L]$ and SI unit metre ($\text{m}$).

Mass

A fundamental quantity represented by symbol $m$, with dimension $[M]$ and SI unit kilogram ($\text{kg}$).

Time

A fundamental quantity represented by symbol $t$, with dimension $[T]$ and SI unit second ($\text{s}$).

Temperature

A fundamental quantity represented by symbol $T$, with dimension $[\Theta]$ and SI unit kelvin ($\text{K}$).

Electric Current

A fundamental quantity represented by symbol $I$, with dimension $[I]$ and SI unit ampere ($\text{A}$).

Amount of Substance

A fundamental quantity represented by symbol $n$, with dimension $[N]$ and SI unit mole ($\text{mol}$).

Luminous Intensity

A fundamental quantity represented by symbol $I$, with dimension $[J]$ and SI unit candela ($\text{cd}$).

Area

A derived quantity with symbol $A$, formula $\text{length} \times \text{breadth}$, dimension $[L^2]$, and SI unit $\text{m}^2$.

Volume

A derived quantity with symbol $V$, formula $\text{length} \times \text{breadth} \times \text{height}$, dimension $[L^3]$, and SI unit $\text{m}^3$.

Speed

A derived quantity with symbol $v$, formula $\text{distance} \div \text{time}$, dimension $[LT^{-1}]$, and SI unit $\text{m/s}$.

Acceleration

A derived quantity with symbol $a$, formula $\text{change in velocity} \div \text{time}$, dimension $[LT^{-2}]$, and SI unit $\text{m/s}^2$.

Force

A derived quantity with symbol $F$, formula $F = ma$, dimension $[MLT^{-2}]$, and SI unit newton ($\text{N}$).

Momentum

A derived quantity with symbol $p$, formula $p = mv$, dimension $[MLT^{-1}]$, and SI unit $\text{kg}\,\text{m/s}$.

Density

A derived quantity with symbol $\rho$, formula $\rho = \frac{m}{V}$, dimension $[ML^{-3}]$, and SI unit $\text{kg/m}^3$.

Pressure

A derived quantity with symbol $P$, formula $P = \frac{F}{A}$, dimension $[ML^{-1}T^{-2}]$, and SI unit pascal ($\text{Pa}$).

Work

A derived quantity with symbol $W$, formula $W = Fd$, dimension $[ML^2T^{-2}]$, and SI unit joule ($\text{J}$).

Energy

A derived quantity with symbol $E$, formulas Kinetic = $\frac{1}{2}mv^2$ and Potential = $mgh$, dimension $[ML^2T^{-2}]$, and SI unit joule ($\text{J}$).

Power

A derived quantity with symbol $P$, formula $P = \frac{W}{t}$, dimension $[ML^2T^{-3}]$, and SI unit watt ($\text{W}$).

Frequency

A derived quantity with symbol $f$, formula $f = \frac{1}{T}$, dimension $[T^{-1}]$, and SI unit hertz ($\text{Hz}$).

Period

A derived quantity with symbol $T$, formula $T = \frac{1}{f}$, dimension $[T]$, and SI unit second ($\text{s}$).

Electric Charge

A derived quantity with symbol $Q$, formula $Q = It$, dimension $[IT]$, and SI unit coulomb ($\text{C}$).

Potential Difference

A derived quantity with symbol $V$, formula $V = \frac{W}{Q}$, dimension $[ML^2T^{-3}I^{-1}]$, and SI unit volt ($\text{V}$).

Resistance

A derived quantity with symbol $R$, formula $R = \frac{V}{I}$, dimension $[ML^2T^{-3}I^{-2}]$, and SI unit ohm ($\Omega$).

Electrical Power

A derived quantity with symbol $P$, formula $P = VI$, dimension $[ML^2T^{-3}]$, and SI unit watt ($\text{W}$).