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dau coroană cine ma ajuta
helppppp​


Dau Coroană Cine Ma Ajutahelppppp class=

Răspuns :

1/Rp=1/R2+1/Rx+1/R3=1/10+1/Rx+1/10=2/10+1/Rx=1/5+1/Rx=>Rp=5Rx/(Rx+5)

Re=R1+Rp+R4<=>10=3+5Rx/(5+Rx)+3<=>4=5Rx/(5+Rx)<=>5Rx=20+4Rx<=>Rx=20 Ω