How is the potential difference distributed among components in a series circuit?

How is the potential difference distributed among components in a series circuit?

• A. It is divided among components
• B. It is the same across all components
• C. It doubles for each added component
• D. It is zero

Answer: (A)

In a series circuit, the potential difference is distributed among the components, while the same current flows through each one. The voltage drop across a component is V = I R, so each element takes a share of the total voltage proportional to its resistance. The sum of all the individual voltages equals the source voltage, V_total = V1 + V2 + … + Vn. That’s why this choice is the best: the voltage is divided among the components, not necessarily equal unless the resistances are the same. If the resistors are equal, each gets the same voltage; if one resistor has higher resistance, it drops more of the total voltage. The other options don’t reflect how voltage behaves in a series circuit: the voltage isn’t inherently the same across all components, it doesn’t automatically double with more components, and it isn’t zero.

In a series circuit, the potential difference is distributed among the components, while the same current flows through each one. The voltage drop across a component is V = I R, so each element takes a share of the total voltage proportional to its resistance. The sum of all the individual voltages equals the source voltage, V_total = V1 + V2 + … + Vn.

That’s why this choice is the best: the voltage is divided among the components, not necessarily equal unless the resistances are the same. If the resistors are equal, each gets the same voltage; if one resistor has higher resistance, it drops more of the total voltage. The other options don’t reflect how voltage behaves in a series circuit: the voltage isn’t inherently the same across all components, it doesn’t automatically double with more components, and it isn’t zero.