Answer
415.2k+ views
Hint: The above problem can be solved by using the working principle of the moving magnet galvanometer, moving coil galvanometer, hot wire voltmeter and potentiometer. The moving magnet galvanometer and moving coil galvanometer is based on the electromagnetic effect of the coil. The hot wire voltmeter is based on the variation in the resistance of the wire with temperature. The potentiometer is based on the variation in the resistance with the length of the wire.
Complete step by step answer:
The moving magnet galvanometer and moving coil galvanometer measures the voltage of the DC supply because the galvanometer does not show any deflection in the reading for the AC supply, so the option (A) and option (B) is incorrect.
The alternating current produces the heat when it passes through a resistor. The variation in the temperature of the hot wire of the hot wire voltmeter measures the AC voltage, so the option (C) is correct.
The potentiometer is the electrical instrument that measures the internal resistance and emf of the unknown battery, so the option (D) is incorrect.
Additional Information:
The moving magnet galvanometer and moving coil galvanometer measures the induced emf of the coil and magnet due to variation in the magnetic field of the coil and magnet. The potentiometer measures the resistance by measuring the change in the length of the unknown wire.
Note: Carefully study the working principle of moving magnet galvanometer, moving coil galvanometer, hot wire voltmeter and potentiometer before solving the problem.
Complete step by step answer:
The moving magnet galvanometer and moving coil galvanometer measures the voltage of the DC supply because the galvanometer does not show any deflection in the reading for the AC supply, so the option (A) and option (B) is incorrect.
The alternating current produces the heat when it passes through a resistor. The variation in the temperature of the hot wire of the hot wire voltmeter measures the AC voltage, so the option (C) is correct.
The potentiometer is the electrical instrument that measures the internal resistance and emf of the unknown battery, so the option (D) is incorrect.
Additional Information:
The moving magnet galvanometer and moving coil galvanometer measures the induced emf of the coil and magnet due to variation in the magnetic field of the coil and magnet. The potentiometer measures the resistance by measuring the change in the length of the unknown wire.
Note: Carefully study the working principle of moving magnet galvanometer, moving coil galvanometer, hot wire voltmeter and potentiometer before solving the problem.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)