Electrical Engineering XYZ MCQs
Which of the quantity consists of SI unit as Candela:
- Luminous intensity
- Velocity
- Force
- Impulse
Correct answer: 1. Luminous intensity
Explanation: Candela (cd) is the SI unit for luminous intensity. Luminous intensity is a measure of the amount of light emitted or received per unit solid angle. It quantifies the brightness of a light source in a particular direction. Candela is used to measure luminous intensity because it specifically refers to the power emitted by a light source in a particular direction.
Velocity, force, and impulse are all different physical quantities that have their own respective SI units:
- Velocity is measured in meters per second (m/s).
- Force is measured in Newtons (N).
- Impulse is measured in Newton-seconds (Ns) or kilogram-meters per second (kg·m/s).