In a series circuit, which statement is true about voltage, resistance, and current?

• A. Voltage is constant, current adds, resistance changes.
• B. Voltage adds, resistance adds, current stays the same.
• C. Current adds, voltage stays the same, resistance decreases.
• D. Voltage stays the same, resistance subtracts, current increases.

Answer: (B)

In a series circuit, there is only one path for current, so the same current flows through every component. The source voltage is divided among the components, meaning the voltages across them add up to the total voltage. The overall resistance is the sum of the individual resistances, since the current must pass through each resistor in sequence, increasing the total resistance.

So the statement that matches this behavior is: voltage adds, resistance adds, and current stays the same.