With a constant supply voltage, what happens to current when more components are added in series?

With a constant supply voltage, what happens to current when more components are added in series?

• A. Current remains the same
• B. Current becomes unstable
• C. Current decreases
• D. Current increases

Answer: (C)

In a series circuit, the same current flows through every component, and the total resistance is the sum of all individual resistances. With a constant supply voltage, the current is given by I = V / R_total. As you add more components in series, R_total increases, so the current must decrease. For example, adding another resistor in series doubles the total resistance, halving the current. Therefore, the current decreases when more components are added in series.

In a series circuit, the same current flows through every component, and the total resistance is the sum of all individual resistances. With a constant supply voltage, the current is given by I = V / R_total. As you add more components in series, R_total increases, so the current must decrease. For example, adding another resistor in series doubles the total resistance, halving the current. Therefore, the current decreases when more components are added in series.