David Sang and Graham Jones Solutions for Chapter: Kirchhoff's Laws, Exercise 7: Questions

Calculate the combined resistance of two $5 \mathrm{\Omega }$ resistors and $10 \mathrm{\Omega }$ resistor connected in series.

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  $4.5 \mathrm{V}$.