Question

If the circuit current is 3 A, what is the value of R3?

72 volts
R1= 36Ω
R2= 50 Ω
R3=?

Answer 1

22 Ω

Step-by-step explanation:

0) to re=write the given schema;

1) to write common equation of U[V];

2) to calculate the value of the current I₁ [A];

3) to write the common equation of current I [A];

4) to calculate the value of the current I₂₃ [A];

5) to calculate the value of R₃ [Ω] using the common equation of U.