Significant figures can be defined as digits in a number that is necessary to indicate the reliable value of measurement. Reliable means those values that are within the measurement resolution or capacity.
Physical Quantity SI unit Dimensional Formula Acceleration Angular acceleration Angular momentum Angular velocity Area Charge Current Current density Density Distance Electric field strength Electric potential Energy Force Frequency Gravitational constant Impulse Latent heat Moment of inertia Power Pressure Resistance Specific heat Strain – – Surface energy Surface Tension Torque Universal gas constant Velocity Volume Work …
Dimensions are the power to which the fundamental quantity is raised to represent any physical quantity. The dimension and unit of seven fundamental quantities can be written as: