Moving Coil Ballistic Galvanometer assignment help, Moving Coil Ballistic Construction. Work done in twisting the suspension wire by an angle θ = 1/2cθ 2. A ballistic galvanometer is a type of sensitive galvanometer; commonly a mirror galvanometer. In operation the unknown quantity of charge Q (in coulombs) is simply: Q = k d {\displaystyle Q=kd} Q=kd. Its construction is similar to that of a ballistic galvanometer, but its coil is suspended without any restoring forces in the . A ballistic galvanometer is one used to measure an electrical blow, or impulse. In the field of projectile, this instrument is useful in motion.

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The galvanometer is the device used for detecting the presence of small current and voltage or for measuring their magnitude.

The galvanometer is mainly used in the bridges and potentiometer where they indicate the null deflection or zero current. The potentiometer is based on the premise that the current sustaining coil is kept between the magnetic field experiences a torque.


The moving coil, suspension, and permanent magnet are the main parts of the galvanometer. It is rectangular or circular and has the number of turns of fine copper wire.

The coil is galvanomeyer moved about its vertical axis of symmetry between the poles of a permanent magnet. The iron core provides the low reluctance flux path and hence provides the strong magnetic field for the coil to move in.

The other current carrying coil is the lower suspension whose torque effect is negligible. The upper suspension coil is made up of gold or copper wire which is made in the form of a ribbon.

Ballistic galvanometer

The mechanical strength of the wire is not very strong, and hence the galvanometers handle carefully without any jerks. The beam of light placed on the scale on which the deflection is measured.

The galvanometer is used as an ammeter by connecting the low resistance wire in parallel with the galvanometer. The potential difference between the voltage and the shunt resistance are equal.


What is Galvanometer? – Definition, Construction & Working Principle – Circuit Globe

As the galvanometer and the shunt resistance are connected in potential with the circuit, their potentials are equal. Thus, the shunt resistance is given as. The galvanometer is used as a voltmeter by connecting the high resistance in series with the circuit.

The range of the voltmeter depends on the value of the resistance connected in series with the circuit. Your email address will not be published.

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