NEET Physics MCQ: NCERT Cell & Combinations

🎯Difficulty :Hard

🔄Ncert Concepts :Cells and Combination of Cells, Potentiometer, EMF, Internal Resistance, Potential Gradient

Related Questions

A dry cell of emf ${\rm{1}}{\rm{.5 }}\,\,{\rm{V}}$ and internal resistance ${\rm{0}}{\rm{.10}}\,\,{\rm{\Omega }}$ is connected across a resistor in series with a very low resistance ammeter. When the circuit is switched on, the ammeter reading settles to a steady rate of ${\rm{2}}\,{\rm{A}}$ . Find $\left( {\rm{i}} \right)$ chemical energy consumption of the cell $\left( {\rm{ii}} \right)$ energy dissipation inside the cell $\left( {\rm{iii}} \right)$ energy dissipation inside the resistor $\left( {\rm{iv}} \right)$ power output of source is

$\begin{array}{*{20}{l}}

{\left( {\rm{i}} \right){\rm{ 3 W }}\left( {{\rm{ii}}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{iii}}} \right){\rm{ 2}}{\rm{.6 W;}}\left( {{\rm{iv}}} \right){\rm{ 2}}{\rm{.6 W}}}

\end{array}$

$\begin{array}{*{20}{l}}

{\left( {\rm{i}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{ii}}} \right){\rm{ 3 W }}\left( {{\rm{iii}}} \right){\rm{ 2}}{\rm{.6 W;}}\left( {{\rm{iv}}} \right){\rm{ 2}}{\rm{.6 W}}}

\end{array}$

$\begin{array}{*{20}{l}}

{\left( {\rm{i}} \right){\rm{ 2}}{\rm{.6 W }}\left( {{\rm{ii}}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{iii}}} \right){\rm{ 9 W;}}\left( {{\rm{iv}}} \right){\rm{ 1 W}}}

\end{array}$

None of the above

Question Tags

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Power, Terminal Voltage, Current

A cell supplies a current ${i_1}$ through a resistance ${R_1}$ and a current ${I_2}$ through a resistance ${R_2}$ . The internal resistance of a cell is

${R_2} - {R_1}$

$\frac{{\left( {{i_1} + \,\,{i_2}} \right)}}{{{i_1} - \,\,{i_2}}}\,\,{R_1}\,{R_2}$

$\frac{{{i_1}\,{R_2} - \,\,{i_2}\,{R_1}}}{{{i_1} - \,\,{i_2}}}$

$\frac{{{i_2}\,{R_2} - \,\,{i_1}\,{R_1}}}{{{i_1} - \,\,{i_2}}}$

Question Tags

🔄Ncert Concepts :Ohm's law, Internal resistance, Circuit analysis

Total surface area of a cathode is $0.05\,\,{m^2}$ and $1\,\,A$ current passes through it for $1\,\,hour$ . Thickness of nickle deposited on the cathode is (Given that density of nickle $= 9\,\,g/cc$ and it’s E.C.E. $= 3.04\,\, imes \,\,{10^{ - 4}}\,\,g/C$

$2.4\,\,m$

$0.24\,\,\mu m$

$2.4\,\,\mu m$

None of these

Question Tags

🔄Ncert Concepts :Electrolysis, Faraday's laws, Density, Volume, Unit conversion

Two identical cells weather connected in parallel or in series gives the same current when connected to an external resistance ${\rm{1}}{\rm{.5}}\,\,{\rm{\Omega }}$ . Find the value of internal resistance of each cell.

$1\,\,{\rm{\Omega }}$

${\rm{0}}{\rm{.5}}\,\,{\rm{\Omega }}$

Zero

${\rm{1}}{\rm{.5}}\,\,{\rm{\Omega }}$

Question Tags

🔄Ncert Concepts :Equivalent resistance, Ohm's Law, Series and parallel circuits

It is possible that any some constant value of emf, but the potential difference between the plates is zero?

Not, possible

Yes, if another identical battery is joined in series

Yes, if another identical battery is joined in opposition

Yes, possible, if another similar battery is joined in parallel

Question Tags

⚡ Time Required :2 mins

🔄Ncert Concepts :electromotive force (EMF), potential difference, series circuits, parallel circuits, opposing batteries

If ${\rm{1}}\,{\rm{ A}}$ current is passed through ${\rm{C}}\,{\rm{u}}\,{\rm{S}}\,{{\rm{O}}_4}$ solution for ${\rm{10}}\,\,{\rm{s}}$ , the number of copper atoms deposited at the cathode will be

$8\,\, imes \,\,{10^{19}}$

$3.1\,\, imes \,\,{10^{19}}$

$6.2\,\, imes \,\,{10^{19}}$

$1.6\,\, imes \,\,{10^{19}}$

Question Tags

🔄Ncert Concepts :Electrolysis, Faraday's laws of electrolysis, Charge, Moles, Avogadro's number

Two identical cells send the same current in $3\,\,\Omega$ resistance, whether connected in series or in parallel. The internal resistance on the cell should be

$1\,\,\Omega$

$3\,\,\Omega$

$\frac{1}{2}\,\,{\rm{\Omega }}$

$3.5\,\,\Omega$

Question Tags

🔄Ncert Concepts :Ohm's Law, Series and Parallel Circuits, Internal Resistance

A battery of emf ${\rm{10}}\,\,{\rm{V}}$ and internal resistance ${\rm{3}}\,\,{\rm{\Omega }}$ is connected to an external resistor. The current in the circuit is ${\rm{0}}{\rm{.5}}\,\,{\rm{A}}$ . the terminal voltage of the battery when the circuit is close is

${\rm{10}}\,\,{\rm{V}}$

Zero

${\rm{1}}{\rm{.5}}\,\,{\rm{V}}$

${\rm{8}}{\rm{.5}}\,\,{\rm{V}}$

Question Tags

⚡ Time Required :2 mins

🔄Ncert Concepts :Electromotive Force (EMF), Internal Resistance, Terminal Voltage, Ohm's Law

The internal resistance of a primary cell is $\begin{array}{*{20}{l}}

{4,}

\end{array}{\rm{\Omega }} $. It generates a current of$ {\rm{0}}{\rm{.2 A}} $in an external resistance of$ \begin{array}{*{20}{l}}

{21,}

\end{array}{\rm{\Omega }}$. The rate at which chemical energy is consumed in providing the current is

$0.42{\rm{ }}\,{\rm{J}}\,{{\rm{s}}^{ - 1}}$

$0.84{\rm{ }}\,{\rm{J}}\,{{\rm{s}}^{ - 1}}$

${\rm{1 }}\,{\rm{J}}\,{{\rm{s}}^{ - 1}}$

${\rm{5 }}\,{\rm{J}}\,{{\rm{s}}^{ - 1}}$

Question Tags