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Explain about moving coil galvanometer in …

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Explain about moving coil galvanometer in deail

    • Posted by Adnan Khan 6 years, 6 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Ďãřşháñăã Yadav ? ? ? 6 years, 6 months ago

    It is a device which is used to detect small values of current. principle ➡️It is based on the fact that a current carrying coil experience a tourq when placed on external magnetic field. working and theory ➡️when a certain amount of current flows in a coil it will experience a tourq given by τ=nIABdinθ as magnetic field is radial so θ=90,, τ=nIAB. Due to rotation of coil a restoring tourq is produced in the elastic spring due to its elasticity so restoring torque is given by τ=kθ where θ is the twist produced in the spring and k is spring torsion constant. kθ=nIAB.... ➡️θ=nIAB/k.

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