A current i = 10 sin is produced when a voltage V = 30 sin 300 t is applied to a circuit. The estimated value of impedance is :

Question

Question

This question was previously asked in

KVS TGT WET (Work Experience Teacher) Official Paper

Answer 1

concept:

Impedance(Z) is given as:Z=

v(t)= V_msin(wt+)

i(t)=I_m sin(wt+)

it is also written as:

Z=

calculation:

v(t) = 30 sin 300 t = 30∠0º

i(t) = 10 sin = 10∠-67.5º

z=

z= 3∠ 67.5º

so correct option is 4.