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The storage battery of a car has an emf ...

The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is `0.4 Omega`, what is the maximum current that can be drawn from the battery?

Text Solution

Verified by Experts

Here `E = 12, r = 0.4 Omega`
Maximum current, `I_("max") = (E )/(r ) = (12)/(0.4) = 30 A`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CURRENT ELECTRICITY -TEXTUAL EXERCISES
  1. The storage battery of a car has an emf of 12 V. If the internal resis...

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  2. A battery of emf 10 V internal resistance 3 Omega is connected to a re...

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  3. Three resistors 1 Omega, 2 Omega and 3 Omega are combined in series. W...

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  4. If the combination is connected to a battery of emf 12 V and negligib...

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  5. Three resistors 2 Omega, 4 Omega and 5 Omega are combined in parallel....

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  6. If the combination is connected to a battery of emf 20 V and negligibl...

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  7. At room temperature (27.0^(@)C) the resistance of a heating element is...

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  8. A negligibly small current is passed through a wire of length 15 m and...

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  9. A silver wire has a resistance of 2.1 Omega at 27.5^(@)C, and a resist...

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  10. A heating element using nichrome connected to a 230V supply draws an i...

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  11. Determine the current in each branch of the network shown in fig.

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  12. In a meter bridge the balance point is found to be at 39.5 cm from the...

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  13. In a meter bridge the balance point is found to be at 39.5 cm from the...

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  14. In a meter bridge the balance point is found to be at 39.5 cm from the...

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  15. A storage battery of emf 0.8 V and internal resistance 0.5 Omega is be...

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  16. In a potentiometer arrangment, a cell of emf 1.25 V gives a balance po...

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  17. The number density of free electrons in a copper conductor estimated i...

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  18. Estimate the average drift speed of conduction electrons in a copper w...

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  19. Compare are drift speed obtained above with (i) thermal speeds of copp...

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  20. In Textual Example 1, the electron drift speed is estimated to be only...

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