## Exercise 4.9 A

Determine the inductance of the coil and the phase between the voltage and the electric current.

Answer: $12\ mH$ ; $17°$

## Exercise 4.9 B

Determine the inductance of the coil and the phase between the voltage and the electric current.

Tip: ${U{_{R{_L}}}}^2+{U{_L}}^2= {U{_{R{_L}+L}}}^2$
Answer: $0{,}71\ mH$ ; $1{,}1°$