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Find the minimum number of cells require...

Find the minimum number of cells required to produce an electric current of `1.5` A through a resistance of `30 Omega`. Given that the emf of each cell is `1.5` V and internal resistance `1.0Omega`.

A

30

B

120

C

40

D

60

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-CURRENT ELECTRICITY-PRACTICE SHEET (EXERCISE - III LEVEL-I (MAIN) (Straight Objective Type Questions))
  1. A 50V battery is connected across a 10 ohm resistor. The current is 4....

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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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