Find the symbolic form of the given switching
circuit . Construct its switching table and interpret your result .

Explanation

Let p : The switch ` S_(1)` is closed
q : The switch ` S_(2)` is closed
~ p : The switch ` S'_(1)` is closed
~ q : The switch ` S'_(2)` is closed
Hence, symbolic form of give switching circuit will
be , ` (p vv q ) ^^ (~p ^^ ~q)`
The switching table will be as follows :

All zeos in last result column shows that given
circuit won't work and hence lamp don't light
irrespective of the status of switches .