Resistance and Figure of Merit of a Galvanometer By Half Deflection Method NEET Questions

Physics - Experimental Skills

Resistance and Figure of Merit of a Galvanometer By Half Deflection Method MCQ Questions


1.
What is the figure of merit (K) of a galvanometer?
A.
Current required to produce unit deflection
B.
Voltage required to produce unit deflection
C.
Power required to produce unit deflection
D.
Resistance required to produce unit deflection
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ANSWER :
A. Current required to produce unit deflection
2.
How is the resistance of a galvanometer determined using the half deflection method?
A.
By using a potentiometer
B.
By using Ohm's law
C.
By using the half deflection method
D.
By measuring half deflection
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ANSWER :
C. By using the half deflection method
3.
What is the role of a shunt resistance in a galvanometer?
A.
To increase its resistance
B.
To reduce its resistance
C.
To measure current
D.
To stabilize current flow
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ANSWER :
B. To reduce its resistance
4.
Why is the half deflection method used to determine the resistance of a galvanometer?
A.
It minimizes external resistance effects
B.
It provides a simple and accurate method
C.
It eliminates the need for exact deflection values
D.
It provides a quick and reliable result
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ANSWER :
B. It provides a simple and accurate method
5.
What is the principle of the half-deflection method used for determining the resistance of a galvanometer?

NEET - 2015

A.
Using a known resistor in series with the galvanometer
B.
Using a known resistor in parallel with the galvanometer
C.
Using a potential divider circuit
D.
None of the above
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ANSWER :
A. Using a known resistor in series with the galvanometer
6.
In the half deflection method, what is the significance of reducing the deflection to half?
A.
Ensures linear response
B.
Reduces heating effects
C.
Eliminates errors due to resistance variations
D.
Reduces the effect of internal resistance
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ANSWER :
D. Reduces the effect of internal resistance