Start Free Mock LoginAlready registered? Login here

Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2017

PhysicsEasysingle choice

Sensitivity of moving coil galvanometer is $s$ . If a shunt of ${(\frac{1}{8})}^{t h}$ of the resistance of galvanometer is connected to moving coil galvanometer, its sensitivity becomes

Options:

Answer:

Solution:

$S = \frac{G}{8}, S = \frac{G}{n - 1}$
$\frac{G}{8} = \frac{G}{n - 1}$
$∴ 8 = n - 1$
$∴ n = 8 + 1 = 9$
Since range of galvanometer has increased nine times its sensitivity reduces to $\frac{1}{9}$ .
$∴ S' = \frac{s}{9}$

Stream:MHT_CETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2017

Doubts & Discussion

Loading discussions...