(a)[2]
Calculate R1's resistance.
(b(i))[3]
Determine the ammeter reading. Show your working.
(b(ii))[2]
Explain in terms of work done and potential difference why the heating effect in R3 is larger than in R1.
Physics 0625 · IGCSE · Electrical quantities
Electrical quantities — practice question
Fig. 7.1 illustrates a circuit that includes a 6.0 V battery of cells and three identical resistors. The labels on Fig. 7.1 are: 6.0 V battery, ammeter A, switches S1 and S2, resistors R1, R2 and R3.