The current passing through the coil of a galvanometer is directly proportional to the:
Correct answer: D. Angle of deflection
- A. Resistance
- B. Conductance
- C. Reactance
- D. Angle of deflection
Explanation
In a galvanometer, the current passing through the coil is directly proportional to the angle of deflection of the pointer or needle. The deflection of the pointer is caused by the current flowing through the coil, and the scale on the galvanometer is calibrated to indicate the current based on the angle of deflection. So, as the current passing through the coil increases, the angle of deflection of the pointer also increases, and the relationship is directly proportional. This is a fundamental principle of galvanometers, which are often used as the basis for ammeters to measure current.
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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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