(a) Draw a labelled diagram of a moving coil galvanometer. Describe briefly its principle and working. (b) Answer the following : (i) Why is it necessary to introduce a cylindrical soft iron core inside the coil a galvanometer? (ii) Increasing the current sensitivity of a galvanometer may not necessarily increase its voltage sensitivity. Explain giving reason.

(a) Draw a labelled diagram of a moving coil galvanometer. Describe br

1.	(a) Draw a labelled diagram of a moving coil galvanometer. Describe briefly its principle and working. (b) Answer the following : (i) Why is it necessary to introduce a cylindrical soft iron core inside the coil a galvanometer? (ii) Increasing the current sensitivity of a galvanometer may not necessarily increase its voltage sensitivity. Explain giving reason.
Answer» Solution :(b) (i) A CYLINDRICAL soft iron core is introduced inside the coil of a galvanometer so as to MAKE the magnetic field STRONGER. It also HELPS in making the field radial .

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