Question

Find the resistance of the resistor R2 in the circuit below.
R1=1 ohms
V=1,5v
I=0,25A

Answer 1

$R=R_1+R_2;I=\frac{U}{R_1+R_2};\\R_2=\frac{U}{I}-R_1;R_2=\frac{1.5}{0.25}-1;\\R_2=5\Omega$

Answer:$R_2=5\Omega$