The sensitivity of galvanometer can be increased by decreasing:
Correct answer: B. Magnetic field
- A. Area of coil
- B. Magnetic field
- C. Number of turns of coil
- D. Torsional constant
Explanation
The sensitivity of a galvanometer is inversely proportional to the strength of the magnetic field in which it operates. A stronger magnetic field tends to dampen the motion of the coil, reducing its sensitivity to changes in current. Decreasing the magnetic field can increase the sensitivity of the galvanometer.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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