Tools: aluminum foil laminated brown paper bag*; a kitchen sponge with abrasive green side (for removing the varnish from the aluminum surface of the aluminum laminated bag to achieve good electrical contact), two sheets of aluminum foil*, two sheets of cushioning foam*, a square‐shaped piece of wooden laminated plate, a sheet of kitchen plastic wrap*, permanent marker, scissors, micrometer, ruler, multimeter with crocodile clips. You can ask for a replacement if items marked with a star become damaged. The resistivity of aluminum $\rho = 2.7\times 10^{-8}~\Omega\cdot \text{m}$; permittivity of vacuum $\varepsilon_0 = 8.854\times 10^{−12}~\text{F m}^{−1}$.

i  ^6.00 Find the thickness of the aluminium foil coating of the brown paper bag.

ii  ^6.00 Find the relative permittivity of the plastic wrap.