Turning off the light switch when leaving a room is important because it helps save energy and reduce electricity costs. It also helps to lower carbon emissions and protect the environment.
Hopefully if your talking about a car; you've taken the keys out after turning the engine off. If leaving a house, you've flipped off the lights on the switch. If not, contact a expert near you and explain the problem - what you are, and are not doing.
If the switch is what is keeping the load from turning on, then yes, there is a voltage across the open switch.
No, you only pay for the power used. Light on you pay, light off no cost.
If a circuit has no switch then it remains 'on' permanently. If you desire to open or close a circuit, for turning on or turning off a light for example, you need some kind of switch.
by turning it ON in the Switch.
try a new switch
No
No
No
No
Turning lights on
The light may not be turning off with the switch due to a faulty switch, a problem with the wiring, or a malfunction in the light fixture itself. It is recommended to check the switch, wiring, and fixture to determine the cause of the issue and address it accordingly.