Question

The potential difference between points ac of the figure is?
A)2/3V
B)8/9V
C)4/3V
D)2V
.....is it 2V?

Answer 1

Explanation:

No it is not 2V.

Potential difference between A and C:

R1=5@+5@+5@

=15@

R2=5@+5@+5@

=15@

R1 and R2 are in parallel,

So,

1/Re=1/R1+1/R2

1/Re=1/15+1/15

1/Re=2/15

2Re=15

Re=15/2

=7.5