Question

All circuits form a complete, regardless of purpose

Answer 1

In a parallel circuit, each resistor has the full voltage of the source applied to it and can operate independently. This allows different components in a circuit to work simultaneously without affecting each other.

Step-by-step explanation:

Electric circuits can be connected in different ways, such as in series or parallel. In a parallel circuit, each resistor has the full voltage of the source applied to it. This means that each resistor can operate independently and draw the same current it would if it were connected alone to the voltage source. For example, in a house, different appliances are often connected in parallel so that they can operate independently and utilize the full voltage of the source.

Answer 2

This is true.

For a circuit to work it has to be complete. The current must flow from a certain point (source) say a cell or battery and back making a complete loop.
We say that current is the flow of charges from the positive terminal to a negative terminal of a cell. For it to perform a certain task then it has to be complete regardless of the purpose.