Explanation

Work, mass and distance are scalar quantities because they have magnitude but no direction, but they are not vector quantities.

Vector Quantities: Velocity, momentum, torque, acceleration, weight, displacement.

Scalar Quantities: Work, distance, speed, mass.

Explanation

Ionization energy (potential) is measured in:

• Electron volts (eV) (for single atoms).
• Kilojoules per mole (kJ/mol) (for molar quantities).

Explanation

Svedberg (Sv):

A unit measuring the sedimentation coefficient (how fast particles settle in a centrifuge).

Used in ultracentrifugation to study macromolecules (e.g., proteins, ribosomes).

1 Sv = 10⁻¹³ seconds.

Explanation

A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy

equal to 3.6 megajoules (MJ) in SI units

.Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities.

Explanation

Electric field intensity is defined as force per unit charge (N/C) or potential difference per unit distance (V/m).

So, V/m is an equivalent.

It is commonly used unit for electric field intensity.

Explanation

The product RC (Resistance × Capacitance) gives the time constant in an RC circuit.

Its unit is Ohm × Farad = seconds (s), which is the unit of time.

Explanation

Energy density is defined as energy per unit volume, so the SI unit is joules per cubic meter (J/m³).

It applies to electric fields where

𝑢 = 1/2𝜀𝐸², with 𝑢 being energy density.

Explanation

Joule is a derived unit of energy, not a base unit.

Kelvin (temperature), Kilogram (mass), and Ampere (current) are SI base units.

Explanation

Meter is the SI unit of length.

It is used to measure distance or height.

Explanation

1 kilowatt hour (kWh) = 3.6 million joules (3.6 × 10⁶ J)

1 joule = 10⁷ ergs, so both joule and erg are much smaller than kilowatt hour.

Hence, Kilowatt hour is the biggest unit.