152776 If the galvanometer $G$ does not show any deflection in the circuit shown, the value of $R$ is given by:

152778 For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure

152780 The current sensitivity of moving coil galvanometer is increased by $25 \%$. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:

152782 A cell of emf $90 \mathrm{~V}$ is connected across series combination of two resistors each of $100 \Omega$ resistance. A voltmeter of resistance $400 \Omega$ is used to measure the potential across each resistor. The reading of the voltmeter will be:

152784 Two cells $A$ and $B$ are connected in the secondary circuit of a potentiometer one at a time and the balancing lengths are respectively $360 \mathrm{~cm}$ and $420 \mathrm{~cm}$. If emf of $A$ is $2.4 \mathrm{~V}$, the emf of the second cell $B$ is-

152776 If the galvanometer $G$ does not show any deflection in the circuit shown, the value of $R$ is given by:

152778 For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure

152780 The current sensitivity of moving coil galvanometer is increased by $25 \%$. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:

152782 A cell of emf $90 \mathrm{~V}$ is connected across series combination of two resistors each of $100 \Omega$ resistance. A voltmeter of resistance $400 \Omega$ is used to measure the potential across each resistor. The reading of the voltmeter will be:

152784 Two cells $A$ and $B$ are connected in the secondary circuit of a potentiometer one at a time and the balancing lengths are respectively $360 \mathrm{~cm}$ and $420 \mathrm{~cm}$. If emf of $A$ is $2.4 \mathrm{~V}$, the emf of the second cell $B$ is-

152776 If the galvanometer $G$ does not show any deflection in the circuit shown, the value of $R$ is given by:

152778 For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure

152780 The current sensitivity of moving coil galvanometer is increased by $25 \%$. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:

152782 A cell of emf $90 \mathrm{~V}$ is connected across series combination of two resistors each of $100 \Omega$ resistance. A voltmeter of resistance $400 \Omega$ is used to measure the potential across each resistor. The reading of the voltmeter will be:

152784 Two cells $A$ and $B$ are connected in the secondary circuit of a potentiometer one at a time and the balancing lengths are respectively $360 \mathrm{~cm}$ and $420 \mathrm{~cm}$. If emf of $A$ is $2.4 \mathrm{~V}$, the emf of the second cell $B$ is-

152776 If the galvanometer $G$ does not show any deflection in the circuit shown, the value of $R$ is given by:

152778 For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure

152780 The current sensitivity of moving coil galvanometer is increased by $25 \%$. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:

152782 A cell of emf $90 \mathrm{~V}$ is connected across series combination of two resistors each of $100 \Omega$ resistance. A voltmeter of resistance $400 \Omega$ is used to measure the potential across each resistor. The reading of the voltmeter will be:

152784 Two cells $A$ and $B$ are connected in the secondary circuit of a potentiometer one at a time and the balancing lengths are respectively $360 \mathrm{~cm}$ and $420 \mathrm{~cm}$. If emf of $A$ is $2.4 \mathrm{~V}$, the emf of the second cell $B$ is-

152776 If the galvanometer $G$ does not show any deflection in the circuit shown, the value of $R$ is given by:

152778 For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure

152780 The current sensitivity of moving coil galvanometer is increased by $25 \%$. This increase is achieved only by changing in the number of turns of coils and area of cross section of the wire while keeping the resistance of galvanometer coil constant. The percentage change in the voltage sensitivity will be:

152782 A cell of emf $90 \mathrm{~V}$ is connected across series combination of two resistors each of $100 \Omega$ resistance. A voltmeter of resistance $400 \Omega$ is used to measure the potential across each resistor. The reading of the voltmeter will be:

152784 Two cells $A$ and $B$ are connected in the secondary circuit of a potentiometer one at a time and the balancing lengths are respectively $360 \mathrm{~cm}$ and $420 \mathrm{~cm}$. If emf of $A$ is $2.4 \mathrm{~V}$, the emf of the second cell $B$ is-