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CBSE Class 12 Physics Current Electricity
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Question 1 of 3
1. Question
In the equation AB = C, A is the current density, C is the electric field, Then B is
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Question 2 of 3
2. Question
The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then
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Question 3 of 3
3. Question
A battery of emf E and internal resistance r is connected across a resistance R. Resistance R can be adjusted to any value greater than or equal to zero. A graph is plotted between the current (i) passing through the resistance and potential difference (V) across it. Select the correct alternative(s).
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