(a)[1]
State, in terms of structure, why metals are good electrical conductors.
(b(i))[2]
Determine W$_2$'s resistance.
(b(ii))[2]
Find the effective resistance of W$_1$ and W$_2$ when they are joined in parallel.
(c(i))[1]
State the battery e.m.f.
(c(ii))[1]
Put a tick (✓) in one box to show the relationship between these three currents. Options shown: $I_1 > I_2 > I_B$ $I_1 > I_B > I_2$ $I_2 > I_1 > I_B$ $I_2 > I_B > I_1$ $I_B > I_1 > I_2$ $I_B > I_2 > I_1$ $I_1 = I_2 = I_B$