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When two identical batteries of internal...

When two identical batteries of internal resistance `1Omega` each are connected in series across a resistor R, the rate of heat produced in R is `J_1`. When the same batteries are connected in parallel across R, the rate is ``J_2 = 2.25 J_2` then the value of R in `Omega` is

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When two identical batteries of internal resistance 1Omega each are connected in series across a resistor R, the rate of heat produced in R is J_(1) When the same batteries are connected in parallel across R, the rate is J_(2) If J_(1) = 2.25 J_(2) then the value of RinOmega is

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Knowledge Check

  • Two identical batteries, each of EMF 2V and internal resistance r =1Omega are connected as shown. the maximum power that can be developed across R using these batteries is :

    A
    3.2W
    B
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    C
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    D
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  • Two indentical batteries, each of emf 2V andinternal resistance r=1Omega are connected as shown. The maximum power that can be developed across R using these batteries is

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    `3.2W`
    B
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    C
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    D
    `4W`

  • n identical calls, each of internal resistance (r) are first connected in parallel and then connected in series across a resistance (R). If the current through R is the same in both cases, then

    A
    `R=(r)/(2)`
    B
    `r=(R)/(2)`
    C
    `R=r`
    D
    `r=0`

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