Draw the electrical symbol for each of the following components of an electrical circuit: I. inductor; II. rheostat; III. diodes; IV. fuse.

}a) (i) State two differences between a primary cell and a secondary cell. \

1. Primary cells are non-rechargeable, meaning they cannot be restored to their original state once discharged, whereas secondary cells are rechargeable and can be reused multiple times after recharging. \
2. The chemical reactions in primary cells are irreversible, leading to the consumption of reactants, while the chemical reactions in secondary cells are reversible, allowing them to be driven in the opposite direction during charging. \ \

a) (ii) State two characteristics of an electromotive force. \ \text{1. Electromotive force (e.m.f.) is the maximum potential difference across the terminals