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.
A galvanometer is an instrument used to:
A.
Measure voltage only
B.
Measure resistance directly
C.
Generate electricity
D.
Detect or measure small electric currents
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ANSWER :
D. Detect or measure small electric currents
2.
The principle of a galvanometer is based on:
A.
Capillary action
B.
Ohm's law alone
C.
A current-carrying coil in a magnetic field experiences a torque
D.
Magnetic induction
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ANSWER :
C. A current-carrying coil in a magnetic field experiences a torque
3.
Who invented the moving coil galvanometer?
A.
Michael Faraday
B.
Andre-Marie Ampere
C.
Galvanì
D.
Jacques-Arsène d'Arsonval (1882)
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ANSWER :
D. Jacques-Arsène d'Arsonval (1882)
4.
In a moving coil galvanometer, the current is proportional to:
A.
θ²
B.
1/θ
C.
The angle of deflection (θ): I ∝ θ
D.
log θ
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ANSWER :
C. The angle of deflection (θ): I ∝ θ
5.
The current sensitivity of a galvanometer is defined as:
A.
Voltage per unit current
B.
Total deflection × current
C.
Resistance × voltage
D.
Deflection per unit current (θ/I)
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ANSWER :
D. Deflection per unit current (θ/I)
6.
The voltage sensitivity of a galvanometer is defined as:
A.
Current per unit voltage
B.
Resistance × current
C.
Total voltage applied
D.
Deflection per unit voltage applied (θ/V)
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ANSWER :
D. Deflection per unit voltage applied (θ/V)