A milliammeter of resistance $5 \mathrm{\Omega }$ gives a full scale deflection for a current of $15 \mathrm{mA}$. If the milliammeter is to be used to measure current upto $1.5 \mathrm{A}$, then the resistance that must be attached to the milliammeter is

A galvanometer of resistance $25 \mathrm{\Omega }$ is shunted by $2.5 \mathrm{\Omega }$ resistance. The part (fraction) of the total current that flows through the galvanometer is given as

A galvanometer of resistance $36 \mathrm{\Omega }$ is shunted by a resistance of $4 \mathrm{\Omega }$. The percentage of the total current passing through the galvanometer is

In an ammeter, $10\%$ of the main current is passing through galvanometer, if the galvanometer is shunted with a $10 \mathrm{\Omega }$ resistance. What is the resistance of the galvanometer?

In order to pass $10\%$ of main current through a moving coil galvanometer of $99 \mathrm{\Omega }$, the resistance of the required shunt is

A galvanometer $(G=1000 \mathrm{\Omega })$ gives full scale deflection when a current $10 \mathrm{\mu A}$ flows through it. It is required to measure a current whose maximum value does not exceed $1 \mathrm{A}$. To do so we need to connect a resistance of

An ammeter is obtained by shunting a $30 \mathrm{\Omega }$ galvanometer with $30 \mathrm{\Omega }$ resistance. What additional shunt be connected across it to double its range?

A galvanometer of resistance $90 \mathrm{\Omega }$ is shunted by a resistance of $10 \mathrm{\Omega }$. What fraction of main current passes through the shunt?

A voltmeter reads $3 \mathrm{V}$ at full-scale deflection and is graded as $6000 \mathrm{\Omega } {\mathrm{V}}^{-1}$. What resistance should be connected in series with it so that it reads $12 \mathrm{V}$ at full scale deflection?