Class 12 NEET Physics Current Electricity Questions Part 1

Equivalent circuit of given circuit is shown in figure (i).Also this is equivalent to a balanced Wheatstone bridge C and D are at equal potential level, no current will flow in this resistance therefore thisresistance can be neglected.
Thus equivalent resistance of this remaining circuit shown in figure (ii) is R.
Then current in AFCEB branch is
i1=

V

R

×

2R

2R+2R

=

V

2R