The sensitivity of a galvanometre increases in relation to all of the following EXCEPT
Correct answer: B. amount of current
- A. area of the coil
- B. amount of current
- C. strength of magnetic field
- D. number of turns in the coil
Explanation
The correct answer is amount of current. The sensitivity of a galvanometer refers to its ability to detect small changes in current, not the absolute value of the current itself. Increasing the area of the coil, the strength of the magnetic field, and the number of turns in the coil all enhance the galvanometer's sensitivity by increasing the torque on the coil for a given small current, thereby allowing it to detect smaller changes. However, the amount of current itself does not affect the sensitivity as it refers to the baseline level of current, not the device's ability to detect variations in it.
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About Steady Current
Steady current is the continuous flow of charge at a constant rate through a conductor. The topic covers current, charge, potential difference, resistance, Ohm's law, resistivity and electrical power, along with series and parallel circuits, while distinguishing conventional current direction from electron motion.
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