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The Coil of a Moving-coil Galvanometer Keeps on Oscillating for a Long Time If It is Deflected and Released. If the Ends of the Coil Are Connected Together, the Oscillation Stops at Once. Explain. - Physics

Short Note

The coil of a moving-coil galvanometer keeps on oscillating for a long time if it is deflected and released. If the ends of the coil are connected together, the oscillation stops at once. Explain.

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Solution

When the ends of the coil are not connected, the coil acts as an inductor in which oscillations persist until the current decays slowly. When these ends are connected, the coil forms a close loop; hence, there is inductance across the ends and the coil does not behave like an inductor. Therefore, all oscillations stop at once.

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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 16 Electromagnetic Induction
Short Answers | Q 3 | Page 303
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