Which of the following statements are correct ?
A. A voltmeter measures the current in a component and is connected in series with the component
B. A voltmeter measures the current in a component and is connected in parallel with the component
C. Voltmeter measures potential difference (p.d) across a component and is connected in series with the component
D. Voltmeter measures potential difference (p.d) across a component and is connected in parallel with the component
Answer
288.9k+ views
Hint: First of all it is important to be aware of the functionality of the voltmeter. The voltmeter is indeed a device that is responsible for the measurement of the potential difference i.e. pd across the two points within a given circuit. For that it is connected in parallel specifically.
Complete step by step answer:
First of all we need to be aware of the processes conducted by the voltmeter and in the circuit. Voltmeter is a device responsible for the measurement of the potential difference between any two given points in the circuit.
To do this process they need to be connected using two wires from the electrical system. This is done by connecting one wire to circuit and one of its ends to the node of the voltmeter and similarly for the other half.
Now in the process of the voltmeter there are specific conditions, and they are as follows :
A) As the voltmeters are connected in parallel so if they would have low resistance then they will deviate more current hence the resistance should be quite high for that.
$I = V/R$
Then $R \approx \infty $ so $I \approx 0$
So the option A is wrong and B is also wrong.
B) As mentioned earlier the voltmeter have very high resistance as compared to the device they are connected along, therefore the voltmeter can’t be in series as then it would nearly make the circuit short-circuited.
So it option C is wrong and D is correct
Therefore the right option is D.
Note: Voltmeter basically measures the potential difference between two points in a given circuit, when it is connected in parallel to the two points across which we want to find the voltage.
Complete step by step answer:
First of all we need to be aware of the processes conducted by the voltmeter and in the circuit. Voltmeter is a device responsible for the measurement of the potential difference between any two given points in the circuit.
To do this process they need to be connected using two wires from the electrical system. This is done by connecting one wire to circuit and one of its ends to the node of the voltmeter and similarly for the other half.
Now in the process of the voltmeter there are specific conditions, and they are as follows :
A) As the voltmeters are connected in parallel so if they would have low resistance then they will deviate more current hence the resistance should be quite high for that.
$I = V/R$
Then $R \approx \infty $ so $I \approx 0$
So the option A is wrong and B is also wrong.
B) As mentioned earlier the voltmeter have very high resistance as compared to the device they are connected along, therefore the voltmeter can’t be in series as then it would nearly make the circuit short-circuited.
So it option C is wrong and D is correct
Therefore the right option is D.
Note: Voltmeter basically measures the potential difference between two points in a given circuit, when it is connected in parallel to the two points across which we want to find the voltage.
Last updated date: 27th May 2023
•
Total views: 288.9k
•
Views today: 5.47k
Recently Updated Pages
Most eubacterial antibiotics are obtained from A Rhizobium class 12 biology NEET_UG

Salamin bioinsecticides have been extracted from A class 12 biology NEET_UG

Which of the following statements regarding Baculoviruses class 12 biology NEET_UG

Sewage or municipal sewer pipes should not be directly class 12 biology NEET_UG

Sewage purification is performed by A Microbes B Fertilisers class 12 biology NEET_UG

Enzyme immobilisation is Aconversion of an active enzyme class 12 biology NEET_UG

Trending doubts
Difference Between Plant Cell and Animal Cell

Write an application to the principal requesting five class 10 english CBSE

Ray optics is valid when characteristic dimensions class 12 physics CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

Write the 6 fundamental rights of India and explain in detail

Write a letter to the principal requesting him to grant class 10 english CBSE

List out three methods of soil conservation

Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE

Write a letter to the Principal of your school to plead class 10 english CBSE
