Question

Physics question.

2) Four resistors are connected across an 8-V DC battery as shown in the figure. The current through the 9-Q resistor is closest to 2 S2 wwwu 9 2 3 S2 H 8 V D) 0.9 A. E) 0.5 A C) 2 A. B) 0.7 A. A) 1 A.

Answer 1

cz it is parallel combination of resistance

so the voltage at every branch will be same

so voltage at branch 1 (3 ohm and 9 ohm) will be

V1=VxR1/(R1+R2)

V1=8x12/18

V1=5.33

total current through 12 ohm

I1=V1/R1

I1=5.33/12

I1=0.444

from current division rule

current through 9 ohm

I=.444x12/9

I=0.58666666666