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Which one of the following must be ensured when two batteries are connected in parallel?
  • a)
    They should have the same make
  • b)
    They should have the same emf
  • c)
    They should have the same internal resistance
  • d)
    They should have the same ampere-hour capacity
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which one of the following must be ensured when two batteries are conn...

Explanation:

Same EMF:
When two batteries are connected in parallel, it is important to ensure that they have the same electromotive force (EMF). This is because batteries with different EMF values will not operate efficiently together. If one battery has a higher EMF than the other, it will discharge into the battery with the lower EMF, causing imbalance and potential damage to the batteries.

Example:
If one battery has an EMF of 12V and the other has an EMF of 10V, connecting them in parallel will result in the higher EMF battery discharging into the lower EMF battery until they reach equilibrium. This can lead to overcharging and reduced lifespan of the batteries.

Precaution:
To prevent this scenario, always ensure that batteries connected in parallel have the same EMF. This will help maintain balance and ensure optimal performance of the battery system.

Therefore, the correct answer is:
They should have the same EMF.
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Community Answer
Which one of the following must be ensured when two batteries are conn...
When batteries are connected in parallel it must be ensured that they have the same emf to avoid short circuits and to avoid any circulating current between batteries..
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Which one of the following must be ensured when two batteries are connected in parallel?a)They should have the same makeb)They should have the same emfc)They should have the same internal resistanced)They should have the same ampere-hour capacityCorrect answer is option 'B'. Can you explain this answer?
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