(D) When current flows from the negative to the positive electrode inside a cell,the cell is being charged.For a cell being charged,the potential diff

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(D) When current flows from the negative to the positive electrode inside a cell,the cell is being charged.For a cell being charged,the potential difference across the electrodes is given by $V = E + Ir$.Here,$E = 5\,V$,$I = 2\,A$,and $r = 0.5\,\Omega$.The potential difference $V = V_{positive} - V_{negative} = E + Ir$.Substituting the values: $V_{positive} - 10 = 5 + (2 \times 0.5)$.$V_{positive} - 10 = 5 + 1 = 6$.$V_{positive} = 16\,V$.

Class 12 Physics Current Electricity Electric Cells and Combination of cells in Series and Parallel

Medium

$A$ current of $2\,A$ is flowing through a cell of $e.m.f.$ $5\,V$ and internal resistance $0.5\,\Omega$ from negative to positive electrode. If the potential of the negative electrode is $10\,V$,the potential of the positive electrode will be .............. $V$.

A
$5$
B
$14$
C
$15$
D
$16$

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Current Electricity

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Electric Cells and Combination of cells in Series and Parallel

The emfs of three cells connected in parallel are $E_1=5 \ V, E_2=8 \ V$ and $E_3=10 \ V$ and their internal resistances are $r_1=1 \ \Omega, r_2=2 \ \Omega$ and $r_3=3 \ \Omega$,respectively. By changing $E_3$ to $E_{3N}$,the equivalent emf is doubled. Then $E_{3N}$ in $V$ is:

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$A$ total of $100$ cells,each having an $emf$ of $5\,V$ and an internal resistance of $1\,\Omega$,are connected to an external resistance of $25\,\Omega$ to obtain the maximum current. If each row contains an equal number of cells,what should be the number of rows?

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The current provided by a battery is maximum when:

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Two identical cells send the same current in $2\,\Omega$ resistance,whether connected in series or in parallel. The internal resistance of the cell should be ............... $\Omega$.

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Explain the 'Mixed Connection' of cells and derive an expression for its equivalent emf and current.

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$A$ current of $2\,A$ is flowing through a cell of $e.m.f.$ $5\,V$ and internal resistance $0.5\,\Omega$ from negative to positive electrode. If the potential of the negative electrode is $10\,V$,the potential of the positive electrode will be .............. $V$.

Similar Questions

The emfs of three cells connected in parallel are $E_1=5 \ V, E_2=8 \ V$ and $E_3=10 \ V$ and their internal resistances are $r_1=1 \ \Omega, r_2=2 \ \Omega$ and $r_3=3 \ \Omega$,respectively. By changing $E_3$ to $E_{3N}$,the equivalent emf is doubled. Then $E_{3N}$ in $V$ is:

$A$ total of $100$ cells,each having an $emf$ of $5\,V$ and an internal resistance of $1\,\Omega$,are connected to an external resistance of $25\,\Omega$ to obtain the maximum current. If each row contains an equal number of cells,what should be the number of rows?

The current provided by a battery is maximum when:

Two identical cells send the same current in $2\,\Omega$ resistance,whether connected in series or in parallel. The internal resistance of the cell should be ............... $\Omega$.

Explain the 'Mixed Connection' of cells and derive an expression for its equivalent emf and current.

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