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the current in a circuit containing a ba...

the current in a circuit containing a battery connected to `2Omega` resistance is `0.9 A`. When ana additional resistance of `8Omega` is connected to the same battery the current observed in the circuit is `0.3A`. Then the internal resistance of the battery is `xOmega`. Find value of x.

A

`0.1Omega`

B

`0.5Omega`

C

`1Omega`

D

zero

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-CURRENT ELECTRICITY-PRACTICE SHEET (EXERCISE - III LEVEL-I (MAIN) (Straight Objective Type Questions))
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  2. A cell whose e.m.f. is 2V and internal resistance is 0.1Omega is conne...

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  3. The emf of a daniel cell is 1.08V. When the terminals of the cell are ...

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  4. A student is asked to connected four cells of e.m.f of 1 V and interna...

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  5. When two identical cells are connected either in series or in parallel...

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  6. Two cells of same emf E but internal resistance r(1) and r(2) are conn...

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  7. the current in a circuit containing a battery connected to 2Omega resi...

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  8. A 6 V cell with 0.5Omega internal resistance , a 10 v cell with 1Omeg...

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  9. Two cells of emf E(1) and E(2) are connected to two resistors R(1) and...

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  10. When two cells of different emf's are connected in series to an extern...

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  11. In the circuit R(1)=400 ohm and R(2)=200 ohm. If the resistance of the...

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  12. For a cell, a graph is plotted between the potential difference V acro...

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  13. How many cells each marked (6V-12A) should be connected in mixed group...

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  14. Find the minimum number of cells required to produce an electric curre...

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  15. Three equal resistance each of 3Omega are in series and connected to c...

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  16. The P.d between the terminals A&B is

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