🔍 Key Concepts

• Behavior of series-connected battery cells during discharge • What happens to a weak or low-capacity cell compared to stronger cells • How current flow in a series string affects voltage and polarity of an individual cell

💭 Think About

• Think about a string of cells in series: if one cell has much lower capacity than the others, what happens to its voltage as the whole string continues to discharge? • In a series circuit, the same current flows through every cell. If one cell reaches zero or near-zero charge first, what must happen to its voltage to keep the current flowing? • Which of the choices describes a situation where the other cells in the string can effectively force current through the weak cell in the opposite direction?

✅ Before You Answer

• Identify which option specifically mentions a weaker cell in a series string compared to the others • Check which choice describes the current effectively charging a cell in the opposite direction (reverse polarity) • Eliminate options that talk about general charging/discharging conditions but do not involve one cell being weaker than the rest in a series string