Current Electricity and Electrical InstrumentHard
Question
A galvanometer coil has a resistance 90W and full scale deflection correct 10mA. A 910W resistance is connected in series with the galvanometer to make a voltmeter. If the least voltmeter is 0.1V, the number of divisions in its scales is
Options
A.30
B.91
C.100
D.None
Solution
Rv = 
- G ⇒ 910 = 
- 90
⇒ V = 10 ⇒ No. of divisions =
= 100
- G ⇒ 910 = - 90⇒ V = 10 ⇒ No. of divisions =
= 100Create a free account to view solution
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