A $20\,\text{V}$ d.c. supply is connected to a circuit made up of five resistors $L$, $M$, $N$, $P$ and $Q$. A potential drop of $7\,\text{V}$ occurs across $L$, and there is an additional $4\,\text{V}$ potential drop across $N$. What potential drops are across $M$, $P$ and $Q$?
- Apotential drop across $M = 9\,\text{V}$, potential drop across $P = 7\,\text{V}$, potential drop across $Q = 13\,\text{V}$
- Bpotential drop across $M = 13\,\text{V}$, potential drop across $P = 7\,\text{V}$, potential drop across $Q = 13\,\text{V}$
- Cpotential drop across $M = 13\,\text{V}$, potential drop across $P = 11\,\text{V}$, potential drop across $Q = 9\,\text{V}$
- Dpotential drop across $M = 17\,\text{V}$, potential drop across $P = 3\,\text{V}$, potential drop across $Q = 17\,\text{V}$