Question

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Answer 1

I= 0,40 A
R1= VR1/I R1= 7,0V/0,40A R1=17,5 ohms
R2= VR2/I R2= 5,0V/ 0,40A R2= 12,5 ohms
R3= VR3/I R3= 8,0V/0,40A R3= 20 ohms
RT= R1+R2+R3 RT= 17,5+12,5+20 RT= 50ohms