Question

in a ground-side switched circuit, when the circuit is off, voltage is present to which point? a) the switch b) the load c) the battery d) the fuse

Explanation:

In a ground - side switched circuit, when the circuit is off, the switch is on the ground side. The load is connected between the power source (battery) and the switch. When the switch is off (open), the load still has voltage present across it from the battery side up to the load. The switch is at ground potential (no voltage relative to ground when off in terms of the path to ground), the battery has its own internal voltage but the question is about where voltage is present in the circuit path when off. The fuse is part of the power path but when the switch is off, the load has voltage (from the positive side of the battery through the load to the switch - side which is open, so the load has voltage across it).

Answer:

B) The load