Units & Measurements
Class 11 · Units & Measurements

Error Propagation (Add/Sub)

Visualize how absolute errors add when quantities are added or subtracted.

Run simulation

Key Notes

01

For R = A ± B: ΔR = ΔA + ΔB (absolute errors add).

02

The relative error in a sum is NOT simply sum of relative errors — use absolute.

Formulas

Sum/difference

Absolute errors add.

Important Points

Always add absolute errors for sum/difference — never subtract.

Error Propagation (Add/Sub) notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.