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Consider the following statements regarding a voltmeter:
1. It is always connected in series across the points between which the potential difference is to be measured.
2. A voltmeter has a very high internal resistance.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements regarding a voltmeter:1. It is alway...
- Voltmeter:
- Voltmeter which is also known as a voltage meter is an instrument that measures the voltage or potential difference between two points of an electronic or electrical circuit. Usually, the voltmeter is used for Alternating Current (AC) circuits or Direct Current (DC) circuits. Alternatively, Radio Frequency (RF) voltage can also be measured by specialized voltmeters.
- In order to measure a device’s voltage, a voltmeter is connected in parallel to a device. This setup is important as objects in parallel usually tend to experience the same potential difference. It is connected in parallel with the circuit mainly because the same voltage drop occurs across it. Hence statement 1 is not correct.
- A voltmeter also has high internal resistance. This is done mainly because it is used in measuring the potential difference between the two points of the circuit. As such the current of the measuring device remains the same. In other words, the high resistance of the voltmeter will impede the flow of current through it. This allows the device to take correct readings of the voltage. Hence statement 2 is correct.
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Consider the following statements regarding a voltmeter:1. It is alway...
Explanation:
Statement 1:
- A voltmeter is always connected in parallel across the points between which the potential difference is to be measured, not in series.
- When connected in parallel, a voltmeter measures the potential difference directly without affecting the circuit's current flow.
Statement 2:
- A voltmeter does have a very high internal resistance to ensure that it draws minimal current from the circuit being measured.
- This high internal resistance prevents the voltmeter from significantly altering the circuit's overall resistance or affecting the accuracy of the voltage measurement.
Therefore, only Statement 2 is correct regarding a voltmeter.
Statement 1:
- A voltmeter is always connected in parallel across the points between which the potential difference is to be measured, not in series.
- When connected in parallel, a voltmeter measures the potential difference directly without affecting the circuit's current flow.
Statement 2:
- A voltmeter does have a very high internal resistance to ensure that it draws minimal current from the circuit being measured.
- This high internal resistance prevents the voltmeter from significantly altering the circuit's overall resistance or affecting the accuracy of the voltage measurement.
Therefore, only Statement 2 is correct regarding a voltmeter.
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Consider the following statements regarding a voltmeter:1. It is always connected in series across the points between which the potential difference is to be measured.2. A voltmeter has a very high internal resistance.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
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