anshu dutta , 15 Years ago
Grade 12
Electric Current> Hard Question NO2...
2 Answers
gOlU g3n|[0]uS
Last Activity: 15 Years ago
is the value of R = 45Ω
There is no effect of 30V battery.Because 50V battery convert it into charging battery.
Chetan Mandayam Nayakar
Last Activity: 15 Years ago
because there is zero current through the 30V battery, there will be zero current through the 10 ohm resistor in the left loop
therefore from Kirchhoff's voltage rule voltage drop across R= 30V, therefore R(50/(20+R))=30, solving this elementary equation, we get R= 30ohm
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