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


7.
A galvanometer can be converted into:
A.
Only a voltmeter
B.
Only an ammeter
C.
An ammeter (using shunt) or voltmeter (using series resistance)
D.
A battery
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ANSWER :
C. An ammeter (using shunt) or voltmeter (using series resistance)
8.
Galvanometer resistance G is typically:
A.
Of the order of MĪ©
B.
Always exactly 100 Ī©
C.
Of the order of tens to hundreds of ohms
D.
Less than 1 mĪ©
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ANSWER :
C. Of the order of tens to hundreds of ohms
9.
The figure of merit (k) of a galvanometer is:
A.
The current required to produce a unit deflection (one division)
B.
Resistance per division
C.
Voltage per division
D.
Power per division
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ANSWER :
A. The current required to produce a unit deflection (one division)
10.
If a galvanometer gives a deflection of 30 divisions for a current of 1.5 mA, its figure of merit is:
A.
30 A/div
B.
20 A/div
C.
5 Ɨ 10ā»āµ A/div
D.
5 Ɨ 10ā»Ā³ A/div
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ANSWER :
C. 5 Ɨ 10ā»āµ A/div
11.
In the half deflection method, the galvanometer resistance G is determined using:
A.
An ammeter
B.
Just one resistor
C.
A capacitor
D.
A high resistance R in series and a shunt S in parallel with the galvanometer
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ANSWER :
D. A high resistance R in series and a shunt S in parallel with the galvanometer
12.
The half deflection method gets its name from:
A.
Half of the resistance
B.
Using a half-bridge
C.
Using only half the battery
D.
The deflection halved by adding a shunt across the galvanometer
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ANSWER :
D. The deflection halved by adding a shunt across the galvanometer