Answer:
Input impedance of this transformer is 50 ohms.
Explanation:
Given that,
Number of turns in the primary coil, [tex]N_p=15[/tex]
Number of turns in the secondary coil, [tex]N_s=6[/tex]
Output impedance of the transformer, [tex]V_o=8\ \Omega[/tex]
The number of turns and the impedance ratio in the step down transformer is given by :
[tex]\dfrac{15}{6}=\sqrt{\dfrac{Z_p}{Z_s}}\\\\\dfrac{15}{6}=\sqrt{\dfrac{Z_p}{8}}\\\\Z_p=50\ \Omega[/tex]
So, the input impedance of this transformer is 50 ohms. Hence, this is the required solution.
