(a)[4]
Calculate the resistance of a different wire made from the same material with length 3.0 m and cross-sectional area $0.90\,\text{mm}^2$.
(b(i))[2]
Table 8.1 is a truth table. Complete its columns so that it shows the values for input B in the circuit.
(b(ii))[2]
On Fig. 8.1, complete the circuit to produce these output values. Label any gate used.