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1/Rseri = 1/24+ 1/8

1/Rs = 8+24/192

Rs = 192/12 = 6 Ohm

Rtotal = 6+4+5 = 15 Ohm

4. 1/Rs = 1/6 + 1/12

1/Rs = (2+1)/12

Rs= 12/3 = 4 Ohm

Rtotal = 4+4+1 = 9

I total = Vtotal/Rtotal = 18/9 = 2 A

5. 1/Rs = 1/5+1/20

Rs = 20/5 = 4 Ohm

Rtotal = 4 + 2 = 6 Ohm

Itotal = Vtotal/Rtotal = 12/6 = 2 A

I1= I2 = I total = 2 A

Rs = 4 Ohm

V = 2. 4 = 8 Ohm

I5ohm = 8/5= 1,6 A