For the resistance network shown in the figure, choose the correct options (s)

Options

A. The current through PQ is zero.
B. `I_1 = 3A`
C. The potential at S is less than at Q.
D. `I_2 = 2A`

Answer

A, B, C, D

Explanation

a., b., c., d.
Due to input and output symmetry P and Q and S and T have
same potential.
,


`R_(eq) = (6xx12)/18 = 4Omega`
`I_1 = 12/4 = 3A`
`I_2 = (12/(6+12)) xx 3`
`I_2 = 2A`
`V_(A) = V_(S) = 2 xx 4 = 8V`
`V_(A) = V_(T) = 1 xx 8 = 8V`
`V_P = V_Q rArr Current through PQ =0` (a)
`V_(P) = V_(Q) rArr V_(Q) gt V_(S)` (c)
`I_1 = 3A` (b)
`I_2 = 2A` .(d)