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What is a galvnometer?

Updated: 9/17/2023
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14y ago

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A galvanometer is a small electric current indicator. It shows the presence, strength, or direction of small electrical currents.

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Q: What is a galvnometer?
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How a ballistic galvnometer measures small charge flown for a short time?

A ballistic galvanometer has a coil of very thin insulated copper wire suspended by means of a phosphor-bronze fiber between two strong poles of magnet. When a small momentry current passes through the coil then the coil experiences a torque =MXBwhere M is magnetic dipole moment of the coil and Bis the magnetic field .due to this torque the coil turns with a jerk . the deflection of the coil varies in proportion of the strength of current, which is measured with the help of lamp and scale arrangement .