Question

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

Accepted Answer

$\begin{array}{*{20}{l}} {\left( {\rm{i}} \right){\rm{ 3 W }}\left( {{\rm{ii}}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{iii}}} \right){\rm{ 2}}{\rm{.6 W\;}}\left( {{\rm{iv}}} \right){\rm{ 2}}{\rm{.6 W}}} \end{array}$

Answer

$\begin{array}{*{20}{l}} {\left( {\rm{i}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{ii}}} \right){\rm{ 3 W }}\left( {{\rm{iii}}} \right){\rm{ 2}}{\rm{.6 W\;}}\left( {{\rm{iv}}} \right){\rm{ 2}}{\rm{.6 W}}} \end{array}$

Answer

$\begin{array}{*{20}{l}} {\left( {\rm{i}} \right){\rm{ 2}}{\rm{.6 W }}\left( {{\rm{ii}}} \right){\rm{ 0}}{\rm{.4 W }}\left( {{\rm{iii}}} \right){\rm{ 9 W\;}}\left( {{\rm{iv}}} \right){\rm{ 1 W}}} \end{array}$

Answer

None of the above

JEE PHYSICS MCQ: CURRENT ELECTRICITY

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