In a series circuit, the total resistance is equal to the sum of the individual resistances with respect to current flow.

• A. Voltage drop
• B. Current flow
• C. Power
• D. Inductance

Answer: (B)

In a series circuit the same current flows through every component, so the total opposition to that current comes from adding up all the resistances. This is why the total resistance is the sum of the individual resistances: each resistor adds a bit more hindrance to the current, and with the same current passing through each part, that cumulative opposition directly lowers how much current can flow (for a fixed supply voltage, current equals voltage divided by total resistance).

To connect it to the other ideas, the voltage across each resistor adds up to the source voltage, but it’s the sum of those resistances that governs the overall current. Power and inductance relate to how energy is used or stored and to components’ reactance, respectively, but the specific statement about summing to determine current flow centers on how resistance controls the current in a series path.