A circuit diagram containing 12 cells, each of e.m.f. 1.5 v and internal resistance 0.25.
Calculate :
(a) Total internal resistance
(b) Total e.m.f.
(c) Total external resistant
(d) Reading shown by the ammeter
(e) Current in 12 ohm and 8 ohm resistors
(f) p.d. across 2.2 resistors
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