AP EAMCET Engineering 2012 Solved Paper

For figure I,
Total resistance =3R
I power =I2(3R)
For figure II,
Resistance =

2R

3

Ω
I power =I2(

2R

3

)
For figure III,
Total resistance =

R

3

Ω
III power =I2(

R

3

)
For figure IV,
Total resistance

3

2

Ω
IV power =I2(

3

2

R)
Hence, option (a) is correct.