*Question G6A02:
What is an advantage of batteries with low internal resistance?*  

*Correct Answer is  B: High discharge current*  

### AI Response: (may contain errors)  

The correct answer to the question about the advantage of batteries with low internal resistance is **B: High discharge current**. 

### Explanation of the Correct Answer:
- **High Discharge Current**: 
  - Batteries with low internal resistance can deliver higher currents without significant voltage drop. This is crucial for applications that require a lot of power quickly, such as starting motors or powering high-drain devices. 
  - The relationship between current ($I$), voltage ($V$), and internal resistance ($R_{internal}$) can be expressed using Ohm's Law:
  
  $$
  V = I \times R_{internal}
  $$
  
  - A lower $R_{internal}$ means that for a given voltage, the battery can provide a higher current.

### Explanation of the Incorrect Answers:
- **A: Long life**: 
  - While low internal resistance can contribute to efficiency, it does not directly correlate with the lifespan of a battery. Battery life is more influenced by factors like chemistry, usage patterns, and charge cycles.
  
- **C: High voltage**: 
  - The internal resistance of a battery does not affect its voltage rating. The voltage is determined by the battery chemistry and design, not by the internal resistance.
  
- **D: Rapid recharge**: 
  - Although low internal resistance can help with charging efficiency, rapid recharge is more dependent on the battery chemistry and the charging method used. Some batteries can be charged quickly despite having higher internal resistance.

### Summary:
- Low internal resistance is primarily advantageous for delivering high discharge currents, making it suitable for applications requiring quick bursts of power. Other factors like battery life, voltage, and recharge speed are influenced by different characteristics and do not directly relate to internal resistance.