When all parts of a circuit are composed of conducting materials, the circuit is said to be
A. parallel C. open
B. shorted D. closed
the answer is d. closed
To determine the answer to this question, we need to understand the definitions of each term provided.
A closed circuit refers to a complete and uninterrupted path for electric current to flow through. In a closed circuit, electrical energy can continuously move from the power source to the load (e.g., a light bulb or motor) and back to the power source. All components and parts of the circuit, including wires, switches, and load, are connected in a way that allows the flow of current.
In contrast, an open circuit refers to an incomplete path where there is a break or discontinuity in the circuit. In an open circuit, the flow of current is interrupted, and electrical energy cannot reach the load or complete the circuit.
A parallel circuit refers to a circuit configuration where several electrical components and branches are connected side by side on separate paths. In a parallel circuit, the components have their own separate branches, allowing the current to flow through each independently.
A shorted circuit, also known as a short circuit, occurs when there is a low-resistance path between two points in the circuit that bypasses the normal load. In other words, the current follows an unintended path with little or no resistance, resulting in a high flow of current. This can cause excessive currents, overheating, and potentially damage to the circuit or components.
Based on these definitions, we can conclude that the correct answer is D. closed, as this refers to a circuit where all parts are composed of conducting materials and the circuit is complete and uninterrupted, allowing the flow of current.