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Three equal resistance each of 3Omega ar...

Three equal resistance each of `3Omega` are in series and connected to cell of internal resistance one ohm. If three resistances are parallel and connected to the same cell. Then the ratio of the respective currents through the electric circuits in the two cases is

A

`1//8`

B

`1//7`

C

`1//5`

D

`1//3`

Text Solution

Verified by Experts

The correct Answer is:
C
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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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