In the circuit shown below, the voltage and current sources are ideal. The voltage (V_{out}) across the current source, in volts, is
(a) 0 (b) 5 (c) 10 (d) 20
For the given circuit
\begin{aligned}V_{\text {out }} & =10 V +2 \Omega \times 5 A \\& =10 V +10 V =20 V\end{aligned}