If the supply voltage of the following parallel circuit is 1

If the supply voltage of the following parallel circuit is 12V, determine   

a) Readings of all ammeters.

b) ?Total resistance to the voltage source

Solution

Ans)

   Reading of A₂ is I₂=12/2=6 A using ohm\'s law I=V/R

      Reading of A₃ is I₃=12/3=4 A

      Reading of A₄ is I₄=12/4=3 A

Reading of A₁ and A₅ is I=I₂+I₃+I₄=6+4+3=13 A

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b ) Total Resistance to the voltage source R=V/I=12/13=0.923 ohms

R=0.923 ohms