PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors
Problem
During a laboratory session, the following unit assignments were written on the board:
1. P=RV2 (labelled with unit "volt")
2. E=Pt (labelled with unit "watt")
3. R=IV (labelled with unit "watt")
(i) For each of the three cases, examine whether the unit written is dimensionally consistent with the quantity on the left-hand side.
(ii) Wherever an inconsistency is found, write the correct SI unit and justify your answer through dimensional reasoning.