Which example illustrates a series circuit?

Which example illustrates a series circuit?

• A. Homes
• B. Fairy lights
• C. Batteries
• D. Street lamps

Answer: (B)

In a series circuit, the current has only one path through all the components, so the same current flows through every element and the total resistance is the sum of the individual resistances. Fairy lights are typically arranged in a chain where the current passes through each bulb in sequence. Because of this, the same current goes through every bulb, and if one bulb burns out, the circuit is broken and the whole string goes out—this is the telltale sign of a series arrangement. Homes and street lamps, by contrast, are wired in parallel in real-world power systems, so each device can operate independently of the others; a fault in one path doesn't stop the rest. A battery is just a power source—the circuit form depends on how you connect the load to it, not a property of the source alone.

In a series circuit, the current has only one path through all the components, so the same current flows through every element and the total resistance is the sum of the individual resistances. Fairy lights are typically arranged in a chain where the current passes through each bulb in sequence. Because of this, the same current goes through every bulb, and if one bulb burns out, the circuit is broken and the whole string goes out—this is the telltale sign of a series arrangement.

Homes and street lamps, by contrast, are wired in parallel in real-world power systems, so each device can operate independently of the others; a fault in one path doesn't stop the rest. A battery is just a power source—the circuit form depends on how you connect the load to it, not a property of the source alone.