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Recent questions tagged cells-emf-internal-resistance

A battery of $emf\: E$ and internal resistance $ r$ is connected across a resistance $ R.\: R$ can be adjusted to any value greater than or equal to zero. A graph is plotted between the current through the resistance and the potential difference across it. Select the incorrect alternative

asked Feb 16, 2014 by thanvigandhi_1

1 answer

An energy source will supply a constant current into the loads of its internal resistance is

asked Feb 15, 2014 by thanvigandhi_1

1 answer

Two sources of equal emf are connected to an external resistance R. The internal resistance of the two sources are $R_1\: and \: R_2 (R_2 > R_1)$. If the potential difference across the source having internal resistance $R_2$ is zero then,

asked Feb 15, 2014 by thanvigandhi_1

1 answer

The potential difference across the terminals of a battery is 10V when there is a current of 3A in the battery from the negative to the positive terminal. When the current is 2A in the reverse direction, the potential difference becomes 15V. The internal resistance of battery is

asked Feb 6, 2014 by thanvigandhi_1

1 answer

Two identical batteries having emf 2.4 V and internal resistance 0.5$ \Omega$ are connected as shown. Potential Difference between A and B is

asked Feb 6, 2014 by thanvigandhi_1

1 answer

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