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It is required to measure the true open circuit e.m.f. of a battery. The best device is
- a)D.C. voltmeter
- b)Ammeter and a known resistance
- c)D.C. potentiometer
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
It is required to measure the true open circuit e.m.f. of a battery. ...
- A potentiometer is an instrument designed to measure an unknown voltage by comparing it with the unknown voltage
- The known voltage may be supplied by a standard cell or any other known voltage reference source
- It makes use of a balance or null condition, no current flows, and hence no power loss is consumed in the circuit
- Thus, the determination of voltage by a potentiometer is quite independent of the source resistance
- Measurements using comparison methods are capable of a high degree of accuracy because the result obtained does not depend upon the actual deflection of the pointer, as in the case of deflection methods
- Hence potentiometer is the best device to measure the true open circuit e.m.f. of a battery
Most Upvoted Answer
It is required to measure the true open circuit e.m.f. of a battery. ...
Measuring the True Open Circuit E.M.F. of a Battery
The true open circuit e.m.f. of a battery refers to the voltage that a battery can produce when it is not connected to any external circuit. This voltage is important to measure because it is the maximum voltage that the battery can produce. To measure the true open circuit e.m.f. of a battery, the best device is a D.C. potentiometer.
D.C. Potentiometer
A D.C. potentiometer is a device that is used to measure the voltage of a battery or any other D.C. source. It consists of a potentiometer, a galvanometer, and a battery. The potentiometer is a variable resistor that can be adjusted to balance the voltage of the battery with the voltage of the potentiometer. The galvanometer is used to measure the voltage difference between the two sources.
Why is a D.C. Potentiometer the Best Device?
A D.C. potentiometer is the best device to measure the true open circuit e.m.f. of a battery because of the following reasons:
1. It is accurate: A D.C. potentiometer is a very accurate device that can measure the voltage of a battery with a high degree of precision.
2. It is sensitive: A D.C. potentiometer is very sensitive and can detect even small changes in voltage.
3. It is easy to use: A D.C. potentiometer is easy to use and does not require any specialized training or knowledge.
Conclusion
In conclusion, to measure the true open circuit e.m.f. of a battery, the best device is a D.C. potentiometer. This device is accurate, sensitive, and easy to use, making it the ideal choice for measuring the maximum voltage that a battery can produce.
The true open circuit e.m.f. of a battery refers to the voltage that a battery can produce when it is not connected to any external circuit. This voltage is important to measure because it is the maximum voltage that the battery can produce. To measure the true open circuit e.m.f. of a battery, the best device is a D.C. potentiometer.
D.C. Potentiometer
A D.C. potentiometer is a device that is used to measure the voltage of a battery or any other D.C. source. It consists of a potentiometer, a galvanometer, and a battery. The potentiometer is a variable resistor that can be adjusted to balance the voltage of the battery with the voltage of the potentiometer. The galvanometer is used to measure the voltage difference between the two sources.
Why is a D.C. Potentiometer the Best Device?
A D.C. potentiometer is the best device to measure the true open circuit e.m.f. of a battery because of the following reasons:
1. It is accurate: A D.C. potentiometer is a very accurate device that can measure the voltage of a battery with a high degree of precision.
2. It is sensitive: A D.C. potentiometer is very sensitive and can detect even small changes in voltage.
3. It is easy to use: A D.C. potentiometer is easy to use and does not require any specialized training or knowledge.
Conclusion
In conclusion, to measure the true open circuit e.m.f. of a battery, the best device is a D.C. potentiometer. This device is accurate, sensitive, and easy to use, making it the ideal choice for measuring the maximum voltage that a battery can produce.
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It is required to measure the true open circuit e.m.f. of a battery. The best device isa)D.C. voltmeterb)Ammeter and a known resistancec)D.C. potentiometerd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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