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Physics - Practical physics Question with Solution | TestHub

PhysicsPractical physicsMiscellaneousEasy2 minQB

PhysicsEasynumerical

A galvanometer coil has a resistance 90 $Ω$ and full scale deflection current 10 mA. A 910 $Ω$ 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

Answer:

100.00

Solution:

$V_{max} = (I_{max}) (R_{g} + R_{s})$

$= (10 \times 1 0^{- 3}) (1000)$

$= 10 V$

$L.C. = 0.1 V$

$N (L.C.) = V_{max}$

$\Rightarrow N = \frac{10}{0.1} = 100$

Stream:JEESubject:PhysicsTopic:Practical physicsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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