The sensitivity of a galvanometer of resistance $406\, \Omega$ is decreased by $30$ times. The shunt used is .................. $\Omega$.

If a galvanometer is shunted by $(\frac{1}{n-1})^{th}$ of the value of its resistance, then the fraction of the total current passing through the galvanometer is

An ammeter, suspected to give inaccurate reading, is connected in series with a silver voltameter. The ammeter indicates $0.54\, A$. A steady current passed for one hour deposits $2.0124\, g$ of silver. If the $E.C.E.$ of silver is $1.118 \times 10^{-3}\, g\, C^{-1}$, then the error in ammeter reading is ................ $A$.

“By increasing current sensitivity,voltage sensitivity is also increased”. This statement is true or false.

The value of shunt resistance,that allows only $10 \%$ of the main current to pass through a galvanometer of resistance $99 \Omega$,is (in $\Omega$)

Explain the construction and principle of a moving coil galvanometer.