In the circuit element given here, if the potential at point `B = V_(B) = 0`, then the potentials of `A` and `D` are given as

Options

A. `V_(A)=-1.5V,V_(D)=+2V`
B. `V_(A)=+1.5V,V_(D)=+2V`
C. `V_(A)=+1.5V,V_(D)=+0.5V`
D. `V_(A)=+1.5V,V_(D)=-0.5V`

Answer

4

Explanation

`V_(B)=0`
`V_(A)-V_(B )`=(current)`xx` (Resistance of AB)
`V_(A)-0=1xx 1.5`
`therefore V_(A)=1.5`
`V_(B )-V_(C)=` (current) `xx` (resistance ofBC)
`0-V_(C)=1xx2.5` or `V_(C)=-2.5` volt
For cell `V_(D)-V_(C)=2` volt
`therefore V_(D)-(-2.5)=2` or `V_(D)+2.5=2`
or `V_(D)=2-2.5=-0.5`
`therefore V_(D)=-0.5` volt
`therefore V_(A)=+1.5,VD=-0.5V`