(a)(i) Name and explain the common defects of a primary cell.

(ii) State two advantages of a secondary cell over a primary cell.

(b) Draw a labelled diagram to show the essential parts of a dry leclanche cell.

(c)(i) Explain why six accumulators each of e.m.f 2V connected in series can be used to start the engine of a car whereas eight dry cells each of e.m.f 1.5 V connected in series cannot be used.

(ii) Name the materials used for the positive terminal, the negative terminal and the electrolyte in a

I. leclanche cell;

II. charged lead acid accumulator.