this is VERY DANGEROUS please get a licened electricen to fix it for you
Complete or partial circuit failure
I don't understand this question However a sewer trap is always buried in the ground, so I cant see how it can be exposed.
An NPN or sinking output accepts voltage and sinks it to ground to complete the circuit. A PNP or sourcing output sources voltage and the external circuit sinks it to ground to complete the circuit. A sourcing circuit would be drawn as voltage->switch->load->ground. A sinking circuit would be drawn as Voltage->load->switch->ground. In these cases, the switch could be a transistor.
If you ground the flow of current like the last part of your question states you will not have a complete circuit as the circuit will open on a short circuit. To make a complete circuit operate you need a power source, an overload device to protect the conductors of the circuit, conductors to carry the current and a load across the power source which causes the current to flow in the circuit. Leave any one of these things out and you will not have a complete circuit.
No, the ground wire is there for safety reasons and only carries current in fault conditions.
Because you won't get a complete and closed circuit without a ground.
1. direct ground circuit 2. virtually ground circuit
he was buried in the ground
He was Buried Under ground.
Neg=Ground, with nowhere for the charge to escape, then it will not complete the circuit
electricity would flow through the water in our bodies and through the ground making a complete circuit
Good clean and tight grounds are needed to complete the circuit.