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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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
8.2W
C
2W
D
4W
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
A
`3.2W`
B
`8.2W`
C
`2W`
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`
RESNICK AND HALLIDAY-CIRCUITS-Practice Questions (Integer Type)
