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The potential difference between the ter...

The potential difference between the terminals of a 6.0V battery is 7.2 V when it is being charged by a current of 2.0A.What is the internal resistance of the battery?

Text Solution

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`v = E + ir
` rArr 7.2 = 6 + 2 xx r `
` rArr = 1.2 = 2r rArr r = 0.6 Omega ` .
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HC VERMA-ELECTRIC CURRENT IN CONDUCTORS-Exercises
  1. Shown an arrangement to measure the emf (epsilon)and internal resistan...

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  2. The potential dofference between the terminals of a battery of emf6.0V...

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  3. The potential difference between the terminals of a 6.0V battery is 7....

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  4. The internal resistance of an accumulator battery of emf 6V is 10(Omeg...

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  5. Find the value of i(1)//i(2)in figure if (a)R=0.1(Omega) (b)R=1(Ome...

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  6. Consider N=n(1).n(2) identical cells, each of emf (epsilon) and intern...

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  7. A battery of emf 100V and a resistor of resistance 10k(Omega)are joind...

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  8. If the reading of ammeter A(1)in figure is 2.4 A, what will the ammete...

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  9. The resistance of the rheostat shown in figure is 30(Omega). Neglectin...

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  10. Three bulbs,each having a resistance of 180(Omega)are connected in par...

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  11. Suppose you have three resistor of (20 Omega),(50Omega)and (100 Omega)...

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  12. A bulb is made using two filaments.A switch selects whether the filame...

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  13. if a current of 12mA exists in the 5k(Omega) resistor, find the curre...

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  14. An ideal battery sends a current of 5A in a resistor.When another resi...

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  15. Find the equivalent resistances of the network shown in figurebetween ...

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  16. A wire of resistance 15.0(Omega)is bent to form a regular hexagon ABCD...

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  17. Consider the circuit shown in figure.Find the current through the10(Om...

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  18. Find the currents through the three resistors shown in Figure

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  19. Shown a part of an electric circuit, The potentials at the points a,b,...

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  20. Each of the resistors shown in figure has a resistances of 10(Omega)an...

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