Let, p : The switch S1 is closed
q : The switch S2 is closed
\(\sim\)p : The switch \(S'_1\) is closed or the switch S1 is open.
\(\sim\)q : The switch \(S'_2\) is closed or the switch S2 is open.
\(\therefore\)The symbolic form of the given circuit is
\(\therefore\)Irrespective of the status of the switches, the
current will not flow in the circuit, that is, the
circuit will always be open.
