04. Cells, Internal Resistance and Cell Combination, Thermocouple
« Previous Topic: 03. Kirchhoff's Law and Combination of Resistance Next Topic: 05. Heating Effect of Current (Energy, Power) »
Join With Us for More Updates
Current Electricity

152545 Four cells of identical emf $E$ and internal resistance $r$ are connected in series to a variable resistor. The following graph shows the variation of terminal voltage of the combination with current. The emf of each cell used is

1 $1.4 \mathrm{~V}$
2 $5.6 \mathrm{~V}$
3 $2 \mathrm{~V}$
4 $1 \mathrm{~V}$
J and K CET- 2011
Current Electricity

152546 The inversion temperature of a copper-iron thermocouple is $540^{\circ} \mathrm{C}$ when the cold junction temperature is $0^{\circ} \mathrm{C}$. If the cold junction temperature is increased by $10^{\circ} \mathrm{C}$, then the neutral temperature and inversion temperature of the thermocouple respectively are

1 $270^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
2 $270^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
3 $280^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
4 $280^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
J and K CET- 2010
Current Electricity

152549 If the emf of a thermocouple, one junction of which is kept $0^{\circ} \mathrm{C}$ is given by $\mathrm{e}=\mathrm{at}+\frac{1}{2} \mathrm{bt}^{2}$ then the neutral temperature will be

1 $\frac{a}{b}$
2 $-\frac{a}{b}$
3 $\frac{a}{2 b}$
4 $-\frac{1}{\mathrm{ab}}$
J and K CET- 2005
Current Electricity

152550 A source of e.m.f. $E=15 \mathrm{~V}$ and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increases with time as $I=1.2 t+3$. Then, the total charge that will flow in first five second will be

1 $10 \mathrm{C}$
2 $20 \mathrm{C}$
3 $30 \mathrm{C}$
4 $40 \mathrm{C}$
J and K CET- 2004
For More Updates join with Us
Current Electricity

152545 Four cells of identical emf $E$ and internal resistance $r$ are connected in series to a variable resistor. The following graph shows the variation of terminal voltage of the combination with current. The emf of each cell used is

1 $1.4 \mathrm{~V}$
2 $5.6 \mathrm{~V}$
3 $2 \mathrm{~V}$
4 $1 \mathrm{~V}$
J and K CET- 2011
Current Electricity

152546 The inversion temperature of a copper-iron thermocouple is $540^{\circ} \mathrm{C}$ when the cold junction temperature is $0^{\circ} \mathrm{C}$. If the cold junction temperature is increased by $10^{\circ} \mathrm{C}$, then the neutral temperature and inversion temperature of the thermocouple respectively are

1 $270^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
2 $270^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
3 $280^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
4 $280^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
J and K CET- 2010
Current Electricity

152549 If the emf of a thermocouple, one junction of which is kept $0^{\circ} \mathrm{C}$ is given by $\mathrm{e}=\mathrm{at}+\frac{1}{2} \mathrm{bt}^{2}$ then the neutral temperature will be

1 $\frac{a}{b}$
2 $-\frac{a}{b}$
3 $\frac{a}{2 b}$
4 $-\frac{1}{\mathrm{ab}}$
J and K CET- 2005
Current Electricity

152550 A source of e.m.f. $E=15 \mathrm{~V}$ and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increases with time as $I=1.2 t+3$. Then, the total charge that will flow in first five second will be

1 $10 \mathrm{C}$
2 $20 \mathrm{C}$
3 $30 \mathrm{C}$
4 $40 \mathrm{C}$
J and K CET- 2004
NEET DIGITAL LIBRARY
Current Electricity

152545 Four cells of identical emf $E$ and internal resistance $r$ are connected in series to a variable resistor. The following graph shows the variation of terminal voltage of the combination with current. The emf of each cell used is

1 $1.4 \mathrm{~V}$
2 $5.6 \mathrm{~V}$
3 $2 \mathrm{~V}$
4 $1 \mathrm{~V}$
J and K CET- 2011
Current Electricity

152546 The inversion temperature of a copper-iron thermocouple is $540^{\circ} \mathrm{C}$ when the cold junction temperature is $0^{\circ} \mathrm{C}$. If the cold junction temperature is increased by $10^{\circ} \mathrm{C}$, then the neutral temperature and inversion temperature of the thermocouple respectively are

1 $270^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
2 $270^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
3 $280^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
4 $280^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
J and K CET- 2010
Current Electricity

152549 If the emf of a thermocouple, one junction of which is kept $0^{\circ} \mathrm{C}$ is given by $\mathrm{e}=\mathrm{at}+\frac{1}{2} \mathrm{bt}^{2}$ then the neutral temperature will be

1 $\frac{a}{b}$
2 $-\frac{a}{b}$
3 $\frac{a}{2 b}$
4 $-\frac{1}{\mathrm{ab}}$
J and K CET- 2005
Current Electricity

152550 A source of e.m.f. $E=15 \mathrm{~V}$ and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increases with time as $I=1.2 t+3$. Then, the total charge that will flow in first five second will be

1 $10 \mathrm{C}$
2 $20 \mathrm{C}$
3 $30 \mathrm{C}$
4 $40 \mathrm{C}$
J and K CET- 2004
Join With Us for More Updates
Current Electricity

152545 Four cells of identical emf $E$ and internal resistance $r$ are connected in series to a variable resistor. The following graph shows the variation of terminal voltage of the combination with current. The emf of each cell used is

1 $1.4 \mathrm{~V}$
2 $5.6 \mathrm{~V}$
3 $2 \mathrm{~V}$
4 $1 \mathrm{~V}$
J and K CET- 2011
Current Electricity

152546 The inversion temperature of a copper-iron thermocouple is $540^{\circ} \mathrm{C}$ when the cold junction temperature is $0^{\circ} \mathrm{C}$. If the cold junction temperature is increased by $10^{\circ} \mathrm{C}$, then the neutral temperature and inversion temperature of the thermocouple respectively are

1 $270^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
2 $270^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
3 $280^{\circ} \mathrm{C}$ and $530^{\circ} \mathrm{C}$
4 $280^{\circ} \mathrm{C}$ and $550^{\circ} \mathrm{C}$
J and K CET- 2010
Current Electricity

152549 If the emf of a thermocouple, one junction of which is kept $0^{\circ} \mathrm{C}$ is given by $\mathrm{e}=\mathrm{at}+\frac{1}{2} \mathrm{bt}^{2}$ then the neutral temperature will be

1 $\frac{a}{b}$
2 $-\frac{a}{b}$
3 $\frac{a}{2 b}$
4 $-\frac{1}{\mathrm{ab}}$
J and K CET- 2005
Current Electricity

152550 A source of e.m.f. $E=15 \mathrm{~V}$ and having negligible internal resistance is connected to a variable resistance so that the current in the circuit increases with time as $I=1.2 t+3$. Then, the total charge that will flow in first five second will be

1 $10 \mathrm{C}$
2 $20 \mathrm{C}$
3 $30 \mathrm{C}$
4 $40 \mathrm{C}$
J and K CET- 2004
For More Updates join with Us