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Class 12 Exam  >  Class 12 Questions  >  The internal resistance of a battery cannot b... Start Learning for Free
The internal resistance of a battery cannot be measured with a conventional multimeter
  • a)
    since the resistance has a small value
  • b)
    since it is not a measurable quantity
  • c)
    since it requires a current to be observed
  • d)
    since it is a fictitious quantity
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The internal resistance of a battery cannot be measured with a convent...
The correct option is C
since it requires a current to be observed
 
It can be calculated from current and voltage data measured from a test circuit containing the battery and a load resistor 
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Most Upvoted Answer
The internal resistance of a battery cannot be measured with a convent...
Explanation:

The internal resistance of a battery is the resistance that the battery exhibits to the flow of current. It is an important parameter that determines the performance of a battery. However, it cannot be measured with a conventional multimeter due to the following reasons:

Requires a current to be observed:
The internal resistance of a battery is a dynamic quantity that changes with the rate of discharge and the state of charge of the battery. To measure the internal resistance, a current must be passed through the battery, and the voltage drop across the battery terminals must be measured. This voltage drop is a function of the internal resistance of the battery. Therefore, a conventional multimeter, which is designed to measure only voltage and current, cannot be used to measure the internal resistance of a battery.

Fictitious Quantity:
The internal resistance of a battery is not a fictitious quantity. It is a real physical quantity that affects the performance of a battery. However, it is not a measurable quantity with a conventional multimeter.

Small value:
The internal resistance of a battery is typically very small, ranging from a few milliohms to a few ohms. This small value makes it difficult to measure accurately with a conventional multimeter.

Conclusion:

In summary, the internal resistance of a battery is an important parameter that affects the performance of a battery. However, it cannot be measured directly with a conventional multimeter due to its dynamic nature, small value, and the need for a current to be passed through the battery. Specialized equipment, such as a battery analyzer, is required to measure the internal resistance of a battery accurately.
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Community Answer
The internal resistance of a battery cannot be measured with a convent...
Conventional multimeter measures flow of current not resistance that's why it is written "a current to be observed".
hope this help:-)
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The internal resistance of a battery cannot be measured with a conventional multimetera)since the resistance has a small valueb)since it is not a measurable quantityc)since it requires a current to be observedd)since it is a fictitious quantityCorrect answer is option 'C'. Can you explain this answer?
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The internal resistance of a battery cannot be measured with a conventional multimetera)since the resistance has a small valueb)since it is not a measurable quantityc)since it requires a current to be observedd)since it is a fictitious quantityCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The internal resistance of a battery cannot be measured with a conventional multimetera)since the resistance has a small valueb)since it is not a measurable quantityc)since it requires a current to be observedd)since it is a fictitious quantityCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The internal resistance of a battery cannot be measured with a conventional multimetera)since the resistance has a small valueb)since it is not a measurable quantityc)since it requires a current to be observedd)since it is a fictitious quantityCorrect answer is option 'C'. Can you explain this answer?.
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