Questions
A galvanometer coil has a resistance and full scale deflection current 10 mA. A resistance is connected in series with the galvanometer to make a voltmeter. If the least count of the voltmeter is 0.1 V the number of divisions on its scale is
detailed solution
Correct option is C
RV =Vig −G ⇒ 910 = V10 × 10−3−90⇒ V=10⇒ No. of division=100.1=100Talk to our academic expert!
Similar Questions
A galvanometer, having a resistance of 50, gives a full sale deflection for a current of 0.05 A. The length in metre of a resistance wire of area of cross-section 2.97x 10-6 cm2 that can be used to convert the galvanometer into an ammeter which can read a maximum of 5 A current is (specific resistance of the wire = 5 x 10-7 m)
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