Question

You've made the finals of the Science Olympics! As one of your tasks, you're given 1.6 g of aluminum and asked to make a wire, using all the aluminum that will dissipate 8.0 W when connected to a 2.3 V battery. What length will you choose for your wire? What diameter will you choose for your wire?

Answer 1

Please help. I'm completely stuck.

Answer 2

Ok I've been using \[R=\rho \times m \div \eta \pi ^2 r^4 \]
\[\rho \] stands for resistivity and
\[\eta\] stands for density