A sensitive galvanometer measures currents:
Correct answer: D. In divisions of angle of twist
- A. In milli amperes
- B. In nano amperes
- C. In amperes
- D. In divisions of angle of twist
Explanation
Galvanometers operate based on the principle of electromagnetic induction, where the current passing through a coil generates a magnetic field that interacts with a permanent magnet, causing a deflection of the coil. The deflection of the coil is often calibrated in terms of the angle of twist, which corresponds to the current flowing through the galvanometer. By observing the deflection angle, one can infer the magnitude of the current being measured.
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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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