Use Kirchhoff's second law to deduce the resistance $R$, of the resistor shown in the circuit loop.

Apply Kirchhoff's laws to the circuit shown in Figure to determine the current that will be shown by the ammeters ${\mathrm{A}}_1, {\mathrm{A}}_2$ and ${\mathrm{A}}_3.$

The cell shown in Figure provides an e.m.f. of $2.0 \mathrm{V}$. The p.d. across one lamp is $1.2 \mathrm{V}$. Determine the potential difference across the other lamp.

You have five $1.5 \mathrm{V}$ cells. How would you connect all five of them to give an e.m.f. of $7.5\mathrm{V}$.

You have five $1.5 \mathrm{V}$ cells. How would you connect all five of them to give an e.m.f. of $1.5\mathrm{V}$.

You have five $1.5 \mathrm{V}$ cells. How would you connect all five of them to give an e.m.f. of  $4.5 \mathrm{V}$.