Moving coil galvanometer working | Moving charges & magnetism | Physics | Khan Academy

A moving coil galvanometer works on the principle that a current-carrying coil placed in a magnetic field, experiences a torque. The coil springs along with the radial field ensure the deflection to be proportional to the strength of the current.
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Created by Mahesh Shenoy

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[@__jyots__]

phew! finally understood the working of a moving coil galvanometer. Thank you so much for the awesome explanation!

[@yashmal1k]

I couldn't... The magnetic field isn't even going through the coil...

[@__jyots__]

@@yashmal1k No... That's not how it works... We pass currently through the coil and hence the coil starts acting as a magnet... And this coil is placed in between two poles of a different magnet... So it turns (since unlike poles attract)...

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ALL DOUBTS CLEARED BY THIS ANIMATION!!!!

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Wow! I was confused about why the field had to be radial. Got it cleared. Amazing presentation. Thank you.

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Brilliantly explained radial field!! Kudos sir

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Thank u so much. Finally understood the concept restoring torque of the spring and why radial field is necessary. Best video on galvanometer on youtube.

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[@ishitabhattacharyya1538]

Sir, why would the field line touching (in line with) the coil only produce a torque on it? why not the other radial field lines; they are also at some angle to the coil, right? pleaseee reply, id be so grateful. btw, I love your videos, you are the only person who I turn to when it comes to really understanding physics. please keep doing what you do. just wanted to let you know that all of us are grateful to you.

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