Four cells, each of e.m.f 1.5 V, are connected in series to form a battery. Find the e.m.f of the bettery.

Four cells of e.m.f. 2.5 V each are connected in series to form a battery, the e.m.f. of the battery is "_______" .

Three cells of 1.5V, 2.5V and 3.5 V, respectively, are connected in series to form a battery. Find the e.m.f of the battery.

Five dry cell each of e.m.f 1.5V are connected in parallel. The e.m.f of the combination is

If six identical cells each having an e.m.f. of 6 V are connected in parallel, the e.m.f. of the combination is

12 cells of each e.m.f 2V are connected in series among them, if 3 cells are connected wrongly. Then the effective e.m.f. of the combination is

Three identical cells of e.m.f. 1.5 V are connected in parallel. The total e.m.f. of the combination is "_____" .

Two cells of e.m.f. 10V & 15V are connected in parallel to each other between points A&B. The cell of e.m.f. 10V is ideal but the cell of e.m.f. 15V has internal resistance 1Omega . The equivalent e.m.f. between A and B is:

Two cells of e.m.f. 10V & 15V are connected in parallel to each other between points A&B. The cell of e.m.f. 10V is ideal but the cell of e.m.f. 15V has internal resistance 1Omega . The equivalent e.m.f. between A and B is: