In a series circuit, devices are connected end-to-end so that current has only one path along which to flow. How are the devices connected?

• A. Open circuit
• B. Parallel circuit
• C. Ground
• D. Devices connected end-to-end so that current has only one path along which to flow

Answer: (D)

In a series arrangement, devices are connected end-to-end in a single line so that there is only one path for current to flow. This means the same current passes through each device one after another. The total resistance is the sum of all individual resistances, and the supply voltage is shared among the devices based on their resistances. If any device opens the circuit, the entire current stops because there’s no alternative path. This description fits the idea of devices being connected end-to-end with one path for current. By contrast, a parallel setup gives multiple paths and a split current, and grounding is just a reference point for voltage, not a topology for connecting devices.