Mon September 09, 2013 By: Rahul Agarwal

(a) Draw the labeled diagram of moving coil galvanometer. Prove that in a radial magnetic field, the deflection of the coil is directly proportional to the current flowing in the coil. (b) A galvanometer can be converted into a voltmeter to measure up to (i) ‘V’ volts by connecting a resistance R1 in series with coil. (ii) V / 2 volt by connecting a resistance R2 in series with its coil. Find the resistance (R), in terms of R1 and R2 required to convert it into a voltmeter that can read up to ‘2V’ volt

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Tue September 10, 2013
Pls post one query at a time.
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