A-Level Physics Physical Quantities and Units

which is an SI base unit?

• current

• gram

• kelvin

• volt

which pair contains one vector and one scalar quantity?

• displacement, acceleration

• force, kinetic energy

• momentum, velocity

• power, speed

which pair of units contains one derived unit and one SI base unit?

• ampere, coulomb

• kilogram, kelvin

• metre, second

• newton, pascal

what is equivalent to 2000 volts?

• 2 micro volts

• 2 mili volts

• 2 pico volts

• 2 kilo volts

which row shows an SI base quantity with its correct unit?

• charge - coulomb

• current - ampere

• potential difference - volt

• temperature - degree Celcius

what is the unit of weight in terms of SI base unit(s) ?

• kg m s^-1

• kg m s^-2

• N

• J m^-1

starting with the smallest first, what is the order of INCREASING magnitude of these energies?

• 5 kJ --> 5 mJ --> 5 MJ --> 5 nJ

• 5 nJ --> 5 kJ--> 5 MJ --> 5 mJ

• 5 nJ --> 5 mJ --> 5 kJ --> 5 MJ

• 5 mJ --> 5 nJ --> 5 kJ --> 5 MJ

which one of these options is NOT a base quantity?

• Time

• Electric current

• Energy

• Luminous Intensity

Which one of these options is NOT a derived quantity?

• Area

• Volume

• Density

• Temperature

1 nm (nano-meter) = .... m

• 1 x 10^-12

• 1 x 10⁹

• 1 x 10^-9

• 1 x 10¹²