The cell has an emf of 2V and the internal resistance of 3.9 the voltage across the cell will be |
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a) |
1.95 |
b) |
1.5V |
c) |
2V |
d) |
1.8V |

The cell has an emf of 2V and the internal resistance of 3.9 the voltage across the cell will be |
|||||||

a) |
1.95 |
b) |
1.5V |
c) |
2V |
d) |
1.8V |

1 Answer

127 votes

**(a)**

When a cell of emf E is connected to a resistance of 3.9 , then the emf E of the cell remains constant, while voltage V goes on decreasing on taking more and more current from the cell.

∴

Where, r is internal resistance.

Also,

Putting the numerical values, we have

127 votes

127